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XC9502 Series
2ch.Step-Up/Down DC/DC Controller ICs
ETR0702_001
GO-Compatible
GENERAL DESCRIPTION
XC9502 series is PWM controlled, PWM/PFM automatic switching controlled, multi-functional, 2 channel step-up and down DC/DC controller ICs. With 0.9V of standard voltage supply internal, and using externally connected components, the output 1 voltage (step-up DC/DC controller) can be set freely within a range of 1.5V to 30V. Since the output 2 (step-down DC/DC controller) has a built-in 0.9V reference voltage (accuracy 2%), 0.9V to 6.0V can be set using external components. With a 180kHz frequency, the size of the external components can be reduced. Switching frequencies of 300kHz and 500kHz are also available as custom-designed products. The control of the XC9502 series can be switched between PWM control and PWM/PFM automatic switching control using external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. Noise is easily reduced with PWM control since the frequency is fixed. The series gives freedom of control selection so that control suited to the application can be selected. Soft-start time is internally set to 10msec (Output1) and offers protection against in-rush currents when the power is switched. This also prevents voltage overshoot.
APPLICATIONS
PDAs Palmtop computers Portable audio Various power supplies
FEATURES
2ch DC/DC Controller : 1.5V ~ 30V (set by FB1 pin) : More than 300mA (VIN=1.8V,VOUT=3.3V) : 80% (TYP.) Maximum Duty Cycle : 83% (TYP.) High Efficiency Output Voltage Range : 0.9V ~ 6.0V (set by FB2 pin) Output Current : 1000mA (VIN=3.3V, VOUT=1.8V) : 100% (TYP.) Maximu Duty Cycle : 92% (TYP.) High Efficiency Supply Voltage Range Input Voltage Range Oscillation Frequency Control Method Stand-by Function Soft-Start Time Package Output Voltage Range Output Current
: 2.0V ~ 10.0V : 0.9V ~ 10.0V : 180kHz ( 15%) * 300kHz, 500kHz custom : PWM or PWM/PFM selectable : 3.0 F (MAX.) : 10ms (internally set) : MSOP-10, USP-10
TYPICAL APPLICATION CIRCUIT

TYPICAL PERFORMANCE CHARACTERISTICS
1/43
XC9502 Series
PIN CONFIGURATION
1 EX T1 2 VD D 3 FB1 4 PW M1 5 E N1 EX T2 1 0
EXT2 10
GN D 9 F B2 8 PW M2 7 EN 2 6
1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1
GND 9 FB2 8 PWM2 7 EN2 6
M MSOP-10 0 SO P -1 (TOP VIEW) (TO P VIE W )
USP-10 (BOTTOM VIEW)
PIN ASSIGNMENT
PIN NUMBER 1 2 3 4 5 6 7 8 9 10 PIN NAME EXT 1 VDD FB1 PWM1 EN1 EN2 PWM2 FB2 GND EXT2/ FUNCTIONS Channel 1: External Transistor Drive Pin Supply Voltage Channel 1: Output Voltage Monitor Feedback Pin Channel 1: PWM/PFM Switching Pin Channel 1: Enable Pin Channel 2: Enable Pin Channel 2: PWM/PFM Switching Pin Channel 2: Output Voltage Monitor Feedback Pin Ground Channel 2: External Transistor Drive Pin
PRODUCT CLASSIFICATION
Ordering Information XC9502
DESIGNATOR DESCRIPTION Type of DC/DC Controller Output Voltage Oscillation Frequency SYMBOL B 09 2 3 5 A D R L DESCRIPTION : Standard type (10 pin) : FB products : 180kHz : 300kHz (custom) : 500kHz (custom) : MSOP-10 : USP-10 : Embossed tape, standard feed : Embossed tape, reverse feed =0, =9 fixed
Package Device Orientation
2/43
XC9502
Series
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Ta=25 PARAMETER VDD Pin Voltage FB1, 2 Pin Voltage EN1, 2 Pin Voltage PWM1, 2 Pin Voltage EXT1, 2 Pin Voltage EXT1, 2 Pin Current Power Dissipation MSOP-10 USP-10 SYMBOL VDD VFB VEN VPWM VEXT IEXT Pd Topr Tstg RATINGS - 0.3 ~ 12.0 - 0.3 ~ 12.0 - 0.3 ~ 12.0 - 0.3 ~ 12.0 - 0.3 ~ VDD + 0.3 100 150 150 - 40 ~ + 85 - 55 ~ + 125 UNITS V V V V V mA mW
O O
Operating Temperature Range Storage Temperature Range
C C
* Voltage is all ground standardized.
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XC9502 Series
ELECTRICAL CHARACTERISTICS
XC9502B092 Common Characteristics
SYMBOL VDD VIN VOUTSET IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL VDD VDD CONDITIONS PARAMETER Supply Voltage (*1) Maximum Input Voltage Output Voltage Range (*3) Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current
(FOSC=180kHz)
MIN. 2.0 10.0 0.9 0.9 2.0 0.9 TYP. MAX. 10.0 UNITS V V V V V V A A A A A A A kHz V V A A A A A A
Ta=25
CIRCUIT
2.0V, IOUT1, 2=1mA VOUT1
VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V FB1, 2=1.0V
VOUT1 VOUT2 VOUT1 VOUT2
153 0.65
70 60 50 70 60 60 1.0 180
VIN 10.0 VIN 160 120 110 160 130 130 3.0 207 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics: Step-Up Controller
PARAMETER FB1 Voltage Operation Start Voltage1 (*2) Oscillation Start-up Voltage1 Maximum Duty Ratio1 Minimum Duty Ratio1 PFM Duty Ratio1 Efficiency 1 (*4) Soft-Start Time1 EXT1 "High" ON Resistance EXT1 "Low" ON Resistance PWM1 "High" Voltage PWM1 "Low" Voltage SYMBOL VFB1 VST1-1 VST2-1 MAXDTY1 MINDTY1 PFMDTY1 EFFI1 TSS1 REXTBH1 REXTBL1 VPWMH1 VPWMH1 CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628 IOUT1=1.0mA, RFB11=200k , RFB12=75k VDD VOUT1: IOUT1=1mA FB1=0V Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT1=30mA, N-ch MOSFET: XP161A1355P VOUT1 0.95V, EN1=0V 0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load MIN. 0.882 TYP. 0.900 MAX. 0.918 0.9 2.0 0.8 85 0 38 UNITS V V V V % % % % 20.0 47 30 0.20 ms
CIRCUIT
Ta=25
75 22
80 30 85
5.0
10.0 28 22
0.65
V V
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics: Step-Down Controller
PARAMETER FB 2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 Efficiency 2 (*4) Soft-Start Time 2 EXT2 "High" ON Resistance EXT2 "Low" ON Resistance PWM2 "High" Voltage PWM2 "Low" Voltage SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 EFFI2 TSS2 REXTBH2 REXTBL2 VPWMH2 VPWMH2 CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA P-ch MOSFET: XP162A12A6P VOUT2 0.95V, EN2=0V 0.65V EN2=0, EXT2=VDD-0.4V FB2=0V, EXT2=0.4V No Load No Load MIN. 0.882 100 22 30 92 5.0 10.0 28 22 20.0 47 30 0.20 0 38 TYP. 0.900 MAX. 0.918 2.0 UNITS V V % % % % ms
Ta=25
CIRCUIT
0.65
V V
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
NOTE: *1 : Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. *2 : Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. *3 : Please be careful not to exceed the breakdown voltage level of the external components. *4 : EFFI={ [ (Output voltage) (Output current) ] / [ (Input voltage) (Input current) ] } 100
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XC9502
Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9502B093 Common Characteristics
SYMBOL VDD VIN VOUTSET IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL CONDITIONS
(FOSC=300kHz)
MIN. 2.0 10.0 0.9 0.9 2.0 0.9 TYP. MAX. 10.0 UNITS V V V V V V A A A A A A A kHz V V A A A A A A
Ta=25
CIRCUIT
PARAMETER Supply Voltage (*1) Maximum put Voltage Output Voltage Range (*3) Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current
VDD 0V, IOUT1, 2=1mA VDD VOUT1 VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V FB1, 2=1.0V
VOUT1 VOUT2 VOUT1 VOUT2
255 0.65
100 80 60 100 70 70 1.0 300
VIN 10.0 VIN 190 150 120 190 150 150 3.0 345 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics: Step-Up Controller
PARAMETER FB1 Voltage Operation Start Voltage (*2) SYMBOL VFB1 VST1-1 VST2-1 MAXDTY1 MINDTY1 PFMDTY1 EFFI1 TSS1 REXTBH1 REXTBL1 VPWMH1 VPWMH1 CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628 IOUT1=1.0mA, RFB11=200k , RFB12=75k VDD VOUT1: IOUT1=1mA FB1=0V Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT=130mA N-ch MOSFET: XP161A1355P VOUT1 0.95V, EN1=0V 0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load MIN. 0.882 TYP. 0.900 MAX. 0.918 0.9 2.0 0.8 85 0 38 UNITS V V V V % % % % 20.0 47 30 0.20 ms
Ta=25
CIRCUIT
Oscillation Start Voltage2 Maximum Duty Ratio Minimum Duty Ratio PFM Duty Ratio Efficiency (*4) Soft-Start Time EXT1 "High" ON Resistance EXT1 "Low" ON Resistance PWM1 "High" Voltage PWM1 "Low" Voltage
75 22
80 30 85
5.0
10.0 28 22
0.65
V V
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics: Step-Down Controller
PARAMETER FB2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA MIN. 0.900 TYP. 0.900 MAX. 0.900 2.0 0 38 UNITS V V % % % % 20.0 47 30 0.20 ms
Ta=25
CIRCUIT
Same as IDD1 100 Same as IDD2 No Load, VPWM2=0V 22 30 IOUT2=250mA Efficiency 2 (*4) EFFI2 92 P-ch MOSFET: XP162A12A6P VOUT2 0.95V, EN2=0V 0.65V Soft-Start Time 2 TSS2 5.0 10.0 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.7 PWM2 "Low" Voltage No Load VPWMH2 Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
V V
NOTE: *1 : Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. *2 : Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. *3 : Please be careful not to exceed the breakdown voltage level of the external components. *4 : EFFI={ [ (output voltage) (output current) ] / [ (input voltage) (input current) ] } 100
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XC9502 Series
XC9502B095
ELECTRICAL CHARACTERISTICS (Continued)
Common Characteristics
SYMBOL VDD VIN VOUTSET CONDITIONS PARAMETER Supply Voltage (*1) Maximum Input Voltage
(FOSC=500kHz)
MIN. 2.0 10.0 0.9 0.9 2.0 0.9 TYP. MAX. 10.0 UNITS V V V V V V A A A A A A A kHz V V A A A A A A
Ta=25
CIRCUIT
Output Voltage Range (*3) Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current
IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
VDD 2.0V, IOUT1, 2=1mA VDDVOUT1 VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V FB1, 2=1.0V
VOUT1 VOUT2 VOUT1 VOUT2
425 0.65
130 110 80 130 90 90 1.0 500
VIN 10.0 VIN 250 220 150 240 190 190 3.0 575 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50
Output 1 Characteristics: Step-Up Controller
CONDITIONS MIN. TYP. VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 Using Tr: 2SD1628 IOUT1=1.0mA, RFB11=200k , RFB12=75k Operation Start Voltage 1 (*2) VST1-1 VDD VOUT1: IOUT1=1mA Oscillation Start Voltage 2 VST2-1 FB1=0V Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 Minimum Duty Ratio 1 MINDTY1 Same as IDD2 PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA Efficiency 1 (*4) EFFI1 83 N-ch MOSFET: XP161A1355P VOUT1 0.95V, EN1=0V 0.65V Soft-Start Time 1 TSS1 5.0 10.0 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 28 EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V 22 PWM1 "High" Voltage No Load 0.65 VPWMH1 PWM1 "Low" Voltage No Load VPWMH1 Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V PARAMETER FB 1 Voltage SYMBOL VFB1 MAX. 0.918 0.9 2.0 0.8 85 0 38 UNITS V V V V % % % % 20.0 47 30 0.20 ms
Ta=25
CIRCUIT
V V
Output 2 Characteristics: Step-Down Controller
PARAMETER FB 2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA MIN. 0.882 TYP. 0.900 MAX. 0.918 2.0 0 38 UNITS V V % % % % 20.0 47 30 0.20 ms
Ta=25
CIRCUIT
Same as IDD1 100 Same as IDD2 No Load, VPWM2=0V 22 30 IOUT2=250mA Efficiency 2 (*4) EFFI2 91 P-ch MOSFET: XP162A12A6P VOUT2 0.95V, EN2=0V 0.65V Soft-Start Time 2 TSS2 5.0 10.0 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.65 PWM2 "Low" Voltage No Load VPWMH2 Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
V V
NOTE: *1 : Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. *2 : Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. *3 : Please be careful not to exceed the breakdown voltage level of the external components. *4 : EFFI={ [ (output voltage) (output current) ] / [ (input voltage) (input current) ] } 100
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XC9502
Series
OPERATIONAL EXPLANATION
The XC9502 series are multi-functional, 2 channel step-up and down DC/DC converter controller ICs with built-in high speed, low ON resistance drivers. The error amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference voltage. In response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases. This circuit generates the switching frequency, which in turn generates the reference clock. The ramp wave generator generates a saw-tooth waveform based on outputs from the Phase Shift Generator. The PWM comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the error amp's output is low, the external switch will be set to ON. This circuit generates PFM pulses. Control can be switched between PWM control and PWM/PFM automatic switching control using external signals. The PWM/PFM automatic switching mode is selected when the voltage of the PWM1 (2) pin is less than 0.2V, and the control switches between PWM and PFM automatically depending on the load. As the PFM circuit generates pulses based on outputs from the PWM comparator, shifting between modes occurs smoothly. PWM control mode is selected when the voltage of the PWM1 (2) pin is more than 0.65V. Noise is easily reduced with PWM control since the switching frequency is fixed. Control suited to the application can easily be selected which is useful in audio applications, for example, where traditionally, efficiencies have been sacrificed during stand-by as a result of using PWM control (due to the noise problems associated with the PFM mode in stand-by). The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to the notes on next page). To protect against inrush current, when the power is switched on, and also to protect against voltage overshoot, soft-start time is set internally to 10ms. It should be noted, however, that this circuit does not protect the load capacitor (CL) from inrush current. With the Vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't increase more than is necessary. This function controls the operation and shutdown of the IC. When the voltage of the EN1 or EN2 pins is 0.2V or less, the mode will be chip disable, the channel's operations will stop and the EXT1 pin will be kept at a low level (the external N-ch MOSFET will be OFF) and the EXT2 pin will be kept at a high level (the external P-type MOSFET will be OFF). When both EN1 and EN2 are in a state of chip disable, current consumption will be no more than 3.0 A. When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be chip enable and operations will recommence. With soft-start, 95% of the set output voltage will be reached within 10mS (TYP.) from the moment of chip enable. Although IC starts oscillation from a VIN of 0.9V, the IC's power supply pin (VDD) and the output voltage monitor pin (FB1) should be connected to VOUT1. The start-up sequence for EN1 and EN2 is required when operations begin with a power supply voltage of VDD=0.9V, and channel two's (output 2) EN2 pin should be set to chip disable and turn it to enable when VOUT1 is more than 2.0V. For power supply voltages of VDD<2.0V, oscillation may occur irrespective of the FB pin voltage. Should this happen, you may find that output voltage will be higher than the set voltage. The FB pin voltage and the reference voltage Vref will be compared and output voltage will be controlled when the power supply voltage is VDD>2.0V or more. With power supply voltages of VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required.
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XC9502 Series
OPERATIONAL EXPLANATION (Continued)
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of RFB11 (RFB21) and RFB12 (RFB22). The sum of RFB11 (RFB21) and RFB12 (RFB22) should normally be 1M or less. VOUT=0.9 (RFB11+RFB12) /RFB12 The value of CFB1 (CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 CFB1 RFB11) which is equal to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load capacity (CL). [Example of Calculation] and RFB12=75k When RFB11=200k
, VOUT1=0.9 (200k+75k) / 75k=3.3V.
[Typical Example]
VOUT (V) 1.0 1.5 1.8 2.0 2.2 RFB11 (k ) 30 220 220 330 390 RFB12 (k ) 270 330 220 270 270 CFB1 (pF) 430 62 62 39 33 VOUT (V) 2.5 2.7 3.0 3.3 5.0 RFB11 (k ) 390 360 560 200 82 RFB12 (k ) 220 180 240 75 18 CFB1 (pF) 33 33 24 62 160 VOUT (V) 8.0 12.0 RFB11 (k ) 120 160 RFB12 (k ) 15 13 CFB1 (pF) 100 82 -
The same method can be also adopted for channel two (output 2). [External Components] Output 1 (Step-Up DC/DC controller) Tr 1 : * MOSFET XP161A1355PR (N-ch Power MOSFET, TOREX) Note: VGS Breakdown Voltage of this Tr. is 8V so please be careful with the power supply voltage. For 6V power supply voltage, XP161A1265PR which VGS breakdown voltage is 12V is recommended. VST1 of XP161A1355PR is 1.2V (MAX.) and that of XP161A1265PR is 1.5V (MAX.) SD 1: L 1: MA2Q737 (Schottky, MATSUSHITA) CMS02 (Schottky, TOSHIBA) 10 H (CDRH5D28, SUMIDA, FOSC = 500kHz) 15 H (CDRH5D28, SUMIDA, FOSC = 300kHz) 22 H (CDRH5D28, SUMIDA, FOSC = 180kHz) 16V, 47 F (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. (IOUT1(mA)/300mA VOUT1/VIN) Output 2 (Step-Down DC/DC controller) Tr 2 : * MOSFET XP162A12A6P (P-ch Power MOSFET, TOREX) Note: VGS Breakdown Voltage of this Tr. is 12V so please be careful with the power supply voltage.
SD 2:
CL1 :
MA2Q737 (Schottky, MATSUSHITA) CMS02 (Schottky, TOSHIBA) L 2: 10 H (CDRH5D28, SUMIDA, FOSC = 500kHz) 22 H (CDRH5D28, SUMIDA, FOSC = 300kHz) 47 H (CDRH5D28, SUMIDA, FOSC = 180kHz) CL1 : 16V, 47 F (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. C=(CL standard value) (IOUT2 (mA)/500mA Tr : RB1 : VOUT2/VIN
C=(CL standard value) Tr : RB1 :
CB1 :
* NPN MOSFET 2SD1628 (SANYO) 500 ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below: RB1 (VIN-0.7) x hFE / IC-REXTBH 2200pF (Ceramic) Set according to the equation below: CB1 (2 x RB2 x FOSC x 0.7)
CB1 :
* PNP MOSFET 2SA1213 (SANYO) 500 ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below: RB2 (VIN-0.7) x hFE / IC-REXTBH 2200pF (Ceramic) Set according to the equation below: CB2 (2 x RB2 x FOSC x 0.7)
8/43
XC9502
Series
TEST CIRCUITS
Circuit 5 Circuit
L1 VIN 510 NPN Tr1 CFB1 CL1 2200pF 1F 1 EXT1 2 VDD 3 FB1 4 PWM1 RFB12 5 EN1 EN2 6 EXT2 10 GND 9 FB2 8 PWM2 7 RFB22 SBD2 RFB21 CFB2 CL2 V RL2 RL CL1 CIN 2200pF 510 A 200k 62pF PNP Tr2 L2 VOUT2 SBD1 VOUT1 A Nch MOSFET1 1 EXT1 2 VDD 3 FB1 4 PWM1 75k OSC VPWM1 VEN1 5 EN1 EN2 6 EXT2 10 GND 9 FB2 8 PWM2 7 VIN CIN L1
Circuit Circuit 1
SBD1 VOUT1
RFB11
Circuit Circuit 2
SBD1 VOUT1 L1 VIN 510 NPN Tr1 CFB1 CL1 1 EXT1 2200pF 2 VDD 3 FB1 4 PWM1 RFB12 5 EN1 EN2 6 EXT2 10 GND 9 FB2 8 PWM2 7 RFB22 SBD2 RFB21 CFB2 CIN 2200pF 510 PNP Tr2 L2 VOUT2
Circuit Circuit 6
1 EXT1 2 VDD Rp CL2 RL2 OSC 1F VDD VFB1 VPWM1 3 FB1 4 PWM1 5 EN1
EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VPWM2 VFB2 VEXT2 A
RFB11
VEXT1
VEN1
VEN2
Circuit Circuit 3
Circuit Circuit 7
Pch MOSFET2 L2 VOUT2
1 EXT1 2 VDD 3 FB1 A OSC 1F VDD VFB1 VPWM1 VEN1 A A A 4 PWM1 5 EN1
EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 A A A OSC CIN
A VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 VEN2 VPWM2 VFB2 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 SBD2
A
V CL2 RL
Circuit Circuit 4
VOUT1 L1 Nch MOSFET1
Circuit 8 Circuit
Pch MOSFET2 L2 VOUT2
A 1 EXT1 2 VDD 3 FB1 4 PWM1 VDD 5 EN1 1F EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VIN CIN VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 75k EN2 6 SBD2 62pF
A 200k V CL2 RL
SBD1 CL1 V RL CIN
9/43
XC9502 Series
EXTERNAL COMPONENTS USED FOR TEST CIRCUITS
Circuit , L1, L2: 22 H (CDRH5D28, SUMIDA) 15 H (CDRH5D28, SUMIDA) 10 H (CDRH5D28, SUMIDA) CRS02 (Schottky diode, TOSHIBA) EC10QS06 (Schottky diode, NIHON INTER) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 35MCE335MB2 x 3 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 2SD1628 (SANYO) 2SA1213 (TOSHIBA) Please use by the conditions as below: RFB11 + RFB12 < 1M RFB21 + RFB22 < 1M RFB11 / RFB12 = (Setting output voltage / 0.9) - 1 VOUT2= (0.9 - VOUT1) x (RFB21/RFB22) + 0.9V Please adjust as below: fxfb=1/(2 x x CFB1 x RFB11) = 1kHz ~ 50kHz (12kHz usual) fxfb=1/(2 x x CFB2 x RFB21) = 1kHz ~ 50kHz (12kHz usual) 22 H (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) 22 H (CDRH5D28, SUMIDA) 15 H (CDRH5D28, SUMIDA) 10 H (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) 22 H (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) 22 H (CDRH5D28, SUMIDA) 15 H (CDRH5D28, SUMIDA) 10 H (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) : XC9502B092A : XC9502B093A : XC9502B095A : XC9502B092A : XC9502B093A : XC9502B095A : XC9502B092A : XC9502B093A : XC9502B095A
SD1, SD2: CL1, CL2: CIN: NPN Tr1: PNP Tr1: RFB:
CFB:
Circuit
L1: SD1: CL1: CIN: N-ch MOSFET1: L1:
Circuit
SD1: CL1: CIN: N-ch MOSFET1: Circuit L1: SD1: CL1: CIN: P-ch MOSFET2: L2:
Circuit
SD2: CL2: CIN: P-ch MOSFET2:
10/43
XC9502
Series
NOTES ON USE
1.Checking for Intermittent Oscillation The XC9502 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. your operating conditions. CL. 2. PWM/PFM Automatic Switching If PWM/PFM automatic switching control is selected and the step-up ratio is low (e.g., from 4.5V to 5.0V) or the step-down ratio is high (e.g., from 10.0V to 1.0 V), the control mode remains in PFM setting in the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9502 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9502 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of PWM/PFM automatic switching control shown on the data sheets are available up to IOUT = 100 mA. Check waveforms at EXT under A remedy for this problem is to raise the inductance of coil L or increase the load capacitance
3. Ratings Use the XC9502 series and external components within the limits of their ratings.
11/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS
< 1ch Step-Up DC/DC Controller > (1) Output Voltage vs. Output Current
FOSC=180kHz, VOUT1= 1.5V
L1=22
FOSC=180kHz, VOUT1= 2.5V
L1=22
1.7
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
2.7
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
1.6 Output Voltage1 VOUT1 (V)
PWM/PFM Switching Control PWM Control
2.6 Output Voltage1 VOUT1 (V)
PWM/PFM Switching Control PWM Control
1.5V
1.5 VIN=0.9V 1.4 1.2V
2.5 VIN=0.9V 2.4 1.2V
1.3
2.3
1.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 3.3V
L1=22
FOSC=180kHz, VOUT1= 5.0V
L1=22
3.5
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
5.2
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
3.4 Output Voltage1 VOUT1 (V)
PWM/PFM Switching Control PWM Control
2.7V Output Voltage1 VOUT1 (V)
5.1
PWM/PFM Switching Control PWM Control
4.2V
3.3 VIN=0.9V 3.2 1.2V,1.5V
5.0 VIN=1.5V 2.7V 3.3V
4.9
3.1
4.8
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
4.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 8.0V
L1=22
8.2
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1265P
PWM/PFM Switching Control PWM Control
5.0V
8.1 Output Voltage1 VOUT1 (V)
8.0 VIN=3.3V 7.9 4.2V
7.8
7.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
12/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 1ch Step-Up DC/DC Controller > (1) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1= 2.5V
L1=15
FOSC=300kHz, VOUT1= 3.3V
3.5
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
2.7
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
2.6 Output Voltage1 VOUT1 (V)
1.5V Output Voltage1 VOUT1 (V)
3.4
2.7V
2.5
3.3 VIN=0.9V 3.2 1.2V 3.1 1.5V
2.4
VIN=0.9V 1.2V
2.3
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
L1=15
FOSC=500kHz, VOUT1= 2.5V
L1=10
5.2
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
2.7
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
5.1 Output Voltage1 VOUT1 (V)
5.0
Output Voltage1 VOUT1 (V)
3.3V
4.2V
2.6
1.5V
2.5
4.9
VIN=1.2V 1.5V
2.7V
2.4
VIN=0.9V 1.2V
4.8
2.3
4.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
L1=10
FOSC=500kHz, VOUT1= 5.0V
L1=10
3.5
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
5.2
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
Output Voltage1 VOUT1 (V)
1.5V 3.3
Output Voltage1 VOUT1 (V)
3.4
2.7V
PWM/PFM Switching Control PWM Control
4.2V
5.1 3.3V 5.0
3.2
VIN=0.9V
4.9 VIN=0.9V 1.2V 4.8 2.7V 1.5V
1.2V
3.1
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
4.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
13/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 1ch Step-Up DC/DC Controller > (2) Efficiency vs. Output Current
Dotted Arrowhead
PWM/PFM Switching Control
14/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 1ch Step-Up DC/DC Controller > (2) Efficiency vs. Output Current (Continued)
FOSC=300kHz, VOUT1= 2.5V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=300kHz, VOUT1= 3.3V
L1=15 H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
100
2.7V 80 Efficiency1 EFFI 1 (%) 1.5V VIN=0.9V 1.2V Efficiency1 EFFI 1 (%) 80
60
60
1.2V VIN=0.9V 1.5V
40
40
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
100
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=500kHz, VOUT1= 2.5V
L1=10
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
80 Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%)
80 1.5V 60 VIN=0.9V 40 1.2V
60 VIN=1.2V 40 1.5V
4.2V 3.3V 2.7V
20
PWM/PFM Switching Control PWM Control
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
100
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 5.0V
L1=10
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
4.2V 80 Efficiency1 EFFI 1 (%)
80 Efficiency1 EFFI 1 (%)
60 VIN=0.9 40 1.2V
2.7V
60 1.2V 40 VIN=0.9V 1.5V
3.3V 2.7V
1.5V
20
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
15/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 1ch Step-Up DC/DC Controller > (3) Ripple Voltage vs. Output Current
FOSC=180kHz, VOUT1= 1.5V
L1=22
FOSC=180kHz, VOUT1= 2.5V
L1=22
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
80 Ripple Voltage1 (mV) Ripple Voltage1 (mV)
80
60 1.2V 40 VIN=0.9V
60
VIN=0.9V 1.2V 1.5V
40
20
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 3.3V
L1=22
FOSC=180kHz, VOUT1= 5.0V
L1=22
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
80 Ripple Voltage1 (mV) Ripple Voltage1 (mV)
80
4.2V
60 VIN=0.9V 40 2.7V 20
1.5V
60 VIN=1.5V 40
2.7V
20 1.2
3.3V
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 8.0V
L1=22
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1265P
PWM/PFM Switching Control PWM Control
80 Ripple Voltage1 (mV) 4.2V VIN=3.3 V
60
5.0V
40
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
16/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 1ch Step-Up DC/DC Controller > (3) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1= 2.5V
100
L1=15H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT1= 3.3V
L1=15 H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
PWM/PFM Switching Control PWM Control
80 Ripple Voltage1 (mV)
1.5V Ripple Voltage1 (mV) 1.2V
80 1.2V 60 VIN=0.9V 40 2.7V 20
1.5V
60
VIN=0.9V
40
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
L1=15
FOSC=500kHz, VOUT1= 2.5V
L1=10
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
3.3V 2.7V 1.5V
4.2V
80 Ripple Voltage1 (mV)
80 Ripple Voltage1 (mV)
PWM/PFM Switching Control PWM Control
1.2V 60 VIN=0.9V 1.5V
60
VIN=1.2V
40
40
20
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
L1=10
FOSC=500kHz, VOUT1= 5.0V
L1=10
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
H(CDRH5D28), CL1=94 F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
80 Ripple Voltage1 (mV)
2.7V 1.2V Ripple Voltage1 (mV)
PWM/PFM Switching Control PWM Control
80
2.7V 1.5V
60 VIN=0.9V 40
60 VIN=0.9V 40
1.2V
20
1.5V
20
4.2V 3.3V
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
17/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current
FOSC=180kHz, VOUT2=1.0V
L2=47
FOSC=180kHz, VOUT2=1.0V
L2=47
1.2
PWM Control
H(CDRH6D38), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
1.2
H(CDRH6D38), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
Output Voltage2 VOUT2 (V)
Output Voltage2 VOUT2 (V)
1.1
10V
1.1
10V
1.0
1.0
0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V
0.9
4.2V 5.0V 6.0V 8.0V VIN=2.7V 3.3V
0.8
0.8
0.7 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V
3.5
L2=47H(CDRH6D38), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT2=5.0V
L2=47
5.2
H(CDRH6D38), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
Output Voltage2 VOUT2 (V)
3.4 Output Voltage2 VOUT2 (V)
5.1
3.3
5.0
3.2 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.1
4.9
VIN= 6.0V 8.0V 10V
4.8
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.0V
L2=22
FOCS=300kHz, VOUT2=1.0V
L2=22
1.2
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
1.2
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
VIN=2.7V 3.3V Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 1.1 1.1 5.0V
1.0
1.0
0.9
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
0.9
4.2V 6.0V 8.0V 10V
0.8
0.8
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
18/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT2=1.8V
L2=22
FOSC=300kHz, VOUT2=1.8V
L2=22
2.0
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
2.0
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
1.9 Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V)
1.9
6.0V 8.0V 10V
1.8
1.8
1.7 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 1.6
1.7 VIN= 2.7V 3.3V 4.2V 5.0V 1.6
1.5 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
1.5 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
L2=22
FOSC=300kHz, VOUT2=2.5V
L2=22
2.7
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
2.7
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
10V
2.6 Output Voltage2 VOUT2 (V)
Output Voltage2 VOUT2 (V)
10.0V
2.6 8.0V 2.5
2.5
2.4 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 2.3
2.4 3.3V 4.2V 5.0V 6.0V 2.3 VIN=2.7V
2.2 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
2.2 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=3.3V
L2=22
FOSC=300kHz, VOUT2=3.3V
L2=22
3.5
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
3.5
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
Output Voltage2 VOUT2 (V)
3.4
VIN=4.2V 5.0V 6.0V 8.0V 3.4 Output Voltage2 VOUT2 (V) VIN=4.2V 5.0V 6.0V 8.0V
3.3 10.0V
3.3
3.2
3.2
10.0V
3.1
3.1
3.0 0.1 1 10 100 1000 3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA)
19/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT2=5.0V
L2=22
FOSC=300kHz, VOUT2=5.0V
L2=22
5.2
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
5.2
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
5.1 Output Voltage2 VOUT2 (V)
10.0V Output Voltage2 VOUT2 (V)
10.0V 5.1
5.0 VIN= 6.0V 8.0V
5.0 VIN= 6.0V 8.0V 4.9
4.9
4.8
4.8
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=1.0V
L2=10
FOSC=500kHz, VOUT2=1.0V
L2=10
1.2
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
1.2
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
Output Voltage2 VOUT2 (V)
1.0
Output Voltage2 VOUT2 (V)
1.1
1.1
VIN=2.7V 3.3V 4.2V 5.0V
1.0
0.9
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
0.9
6.0V 8.0V 10V
0.8
0.8
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=3.3V
L2=10
FOSC=500kHz, VOUT2=3.3V
L2=10
3.5
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
3.5
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
10V Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 3.4 3.4
3.3 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.2
3.3 VIN=4.2V 5.0V 6.0V 8.0V 3.2
3.1
3.1
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
20/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT2=5.0V
L2=10
5.2
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
5.1 Output Voltage2 VOUT2 (V)
5.0 VIN= 6.0V 8.0V 10V 4.9
4.8
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
21/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current
FOSC=180kHz, VOUT2=1.0V
L2=47 H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=180kHz, VOUT2=1.0V
L2=47 H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
80 Efficiency2 EFFI12 (%)
PWM/PFM Switching Control PWM Control
VIN=5.0V 80 Efficiency2 EFFI12 (%) 8.0V
60 4.2V 40 3.3V 20 VIN=2.7V
60 6.0V 40 10V 20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V
L2=47 H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=180kHz, VOUT2=5.0V
L2=47 H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100 5.0V 80 Efficiency2 EFFI12 (%) VIN=4.2V
100
80 10V 8.0V Efficiency2 EFFI12 (%) 10V 8.0V 40 VIN=6.0V
60
60
40
6.0V
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.0V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=300kHz, VOUT2=1.0V
L2=22
100
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
80 Efficiency2 EFFI12 (%)
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
80 Efficiency2 EFFI12 (%) 6.0V 60 8.0V
10V
60 4.2V 40 3.3V VIN=2.7V 20
40
20 VIN=5.0V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
22/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current (Continued)
FOSC=300kHz, VOUT2=1.8V
L2=22
FOSC=300kHz, VOUT2=1.8V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
80 Efficiency2 EFFI12 (%) VIN= 2.7V 60 3.3V 40 4.2V Efficiency2 EFFI12 (%)
80
10V VIN=5.0V 8.0V
60
40 6.0V 20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr:2XP162A12A6P
FOSC=300kHz, VOUT2=2.5V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
PWM/PFM Switching Control PWM Control
80 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) VIN=2.7V 60 3.3V
80 10V 60 VIN=5.0V 40 6.0V 20 8.0V
40
4.2V
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=3.3V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=300kHz, VOUT2=5.0V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
80 Efficiency2 EFFI12 (%)
10V Efficiency2 EFFI12 (%)
80
60 8.0V 40 6.0V 20 VIN=4.2V 5.0V
60 10V 40 8.0V
20
VIN=6.0V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
23/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current (Continued)
FOSC=500kHz, VOUT2=1.0V
L2=10
FOSC=500kHz, VOUT2=1.0V
L2=10
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
80 Efficiency2 EFFI12 (%)
PWM/PFM Switching Control PWM Control
80 Efficiency2 EFFI12 (%)
PWM/PFM Switching Control PWM Control
VIN=5.0V 60 10V 6.0V 20 8.0V
60 4.2V 40 3.3V VIN=2.7V
40
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=3.3V
L2=10
FOSC=500kHz, VOUT2=3.3V
L2=10
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
80 Efficiency2 EFFI12 (%)
10V Efficiency2 EFFI12 (%)
80 8.0V 6.0V
60
60 10V 40 8.0V VIN=6.0V
PWM/PFM Switching Control PWM Control
40
5.0V VIN=4.2V
20
PWM/PFM Switching Control PWM Control
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
24/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current
FOSC=180kHz, VOUT2=1.0V
L2=47
FOSC=180kHz, VOUT2=1.0V
L2=47
100
PWM Control
H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH6D28), CL2=94 F(Tantalum) SD2CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV)
80
60
60
40
40
VIN=2.7V
4.2V
10V 5.0V 6.0V
8.0V 3.3V
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V
L2=47
FOSC=180kHz, VOUT2=3.3V
L2=47
100
PWM Control
H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60 10V 40 5.0V 8.0V VIN=4.2V 6.0V
60
40
VIN=4.2V 5.0V 6.0V 8.0V
10V
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=5.0V
L2=47
FOSC=180kHz, VOUT2=5.0V
L2=47
100
PWM Control
H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH6D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60
60
40 8.0V 20 VIN=6.0V
10V
40 VIN=6.0V 20
8.0V
10V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
25/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
PWM Control
100
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60
VIN=2.7V 3.3V 5.0V 6.0V
60
VIN=2.7V
40 8.0V 10V 20 4.2V
40
6.0V 5.0V
10V
4.2V
8.0V 3.3V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.8V
L2=22
FOSC=300kHz, VOUT2=1.8V
L2=22
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60
80
60 5.0V 4.2V 10V 8.0V 6.0V 40 3.3V VIN=2.7V
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
L2=22
FOSC=300kHz, VOUT2=2.5V
L2=22
100
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
80
60
60 10V 8.0V 6.0V 5.0V 4.2V
VIN=2.7V 3.3V
40
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
*When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
26/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT2=3.3V
L2=22 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=300kHz, VOUT2=3.3V
L2=22
100
PWM Control
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) VIN=4.2V 5.0V 6.0V 8.0V 10V 60
80
60
VIN=4.2V 5.0V 6.0V 8.0V 10.0V
40
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=5.0V
L2=22
FOSC=300kHz, VOUT2=5.0V
100
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60 VIN=6.0V 40 10V 20 8.0V
60
40 VIN=6.0V 20 8.0V 10.0V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=1.0V
L2=10
FOSC=500kHz, VOUT2=1.0V
L2=10
100
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
60 VIN=2.7V 40 8.0V 10V 20 5.0V
40
6.0V
4.2V
3.3V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
27/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
< 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued)
FOSC=500kHz, VOUT2=3.3V
L2=10 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=500kHz, VOUT2=3.3V
L2=10 H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
PWM Control
100
PWM/PFM Switching Control
80 Ripple Voltage2 (mV)
80 Ripple Voltage2 (mV)
60 8.0V 10V 40 5.0V 20 VIN=4.2V 6.0V
60 VIN=4.2V 40 5.0V 6.0V 8.0V 10V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=5.0V
L2=10
FOSC=500kHz, VOUT2=5.0V
L2=10
100
PWM Control
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
H(CDRH5D28), CL2=94 F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80
60
60
40 8.0V 20 VIN=6.0V
10V
40 VIN=6.0V 20
8.0V
10V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94 F (Tantalum) + 100 F (OS capacitor)
28/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Supply Current vs. Supply Voltage (8) Supply Current 1-1 vs. Supply Voltage
(9) Supply Current 1-2 vs. Supply Voltage
(10) Supply Current 1-3 vs. Supply Voltage
(11) Supply Current 1-4 vs. Supply Voltage
(12) Supply Current 2 vs. Supply Voltage
29/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(13) Oscillation Frequency vs. Supply Voltage (14) Stand-by Current vs. Supply Voltage
(15) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage
(16) EN1, 2 'H' 'L' Voltage vs. Supply Voltage
(17) Maximum Duty Ratio 1 vs. Supply Voltage
(18) PFM Duty Ratio 1, 2 vs. Supply Voltage
30/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) EXT 1, 2 High ON Resistance vs. Supply Voltage (20) EXT 1, 2 Low ON Resistance vs. Supply Voltage
(21) Output Voltage vs. Ambient Temperature
(22) Oscillation Start-Up Voltage vs. Ambient Temperature
(23) Operation Retention Voltage vs. Ambient Temperature
(24) Operation Start-Up Voltage vs. Ambient Temperature
31/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(25) Soft-Start Time 1, 2 vs. Supply Voltage
32/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response [1 channel: Step-Up DC/DC Controller] < VOUT1 = 3.3V, VIN = 2.0V, IOUT1, 2 =100 A PWM Control 100mA >
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100 A 100mA
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA 100 A
CH1
3.3V
CH1
3.3V
100mA CH2 100 A
100mA 100 A
CH2
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
10msec/div
PWM/PFM Switching Control
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100 A 100mA
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA 100 A
CH1
3.3V CH1
3.3V
100mA CH2 CH2 100 A
100mA 100 A
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
10msec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
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XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) < VOUT1 = 3.3V, VIN = 2.0V, IOUT1, 2 =10mA PWM Control 100mA >
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=10mA 100mA
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2
10mA
CH2
10mA
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
PWM/PFM Switching Control
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=10mA 100mA
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA
100mA CH2
CH2
10mA
10mA
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
200 sec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div
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XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=1mA, PWM1 'L' 'H' FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=1mA, PWM1 'H' 'L'
CH1
3.3V
CH1
3.3V
0.65V 0.65V CH2 0V CH2 0V
1msec/div CH1: VOUT1, AC-COUPLED, 10mV/div CH2: PWM1, 0.5V/div
1msec/div CH1: VOUT1, AC-COUPLED, 10mV/div CH2: PWM1, 0.5V/div
FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA, EN1 'L' 'H' CIN=47 F
3.3V CH1 300mA
CH2 0.65V CH3
4ms/div CH1: VOUT1, 1.0V/div CH2: IIN1, 100mA/div CH3: EN1, 0.5V/div
* EN2=GND
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XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) < VOUT2=3.3V, VIN=5.0V, IOUT2=100 A PWM Control FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100 A 300mA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA 100 A 300mA>
CH1
3.3V CH1 3.3V
300mA 100 A CH2
300mA
CH2
200 sec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div
10msec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div
100
A
PWM/PFM Switching Control
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100 A 300mA
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA 100 A
CH1
3.3V CH1 3.3V
300mA
300mA
CH2
100
A
CH2 100 A
200 sec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div
10msec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div
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XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) < VOUT2=3.3V, VIN=5.0V, IOUT2=10mA PWM Control FOSC=300kHz, VOUT2=3.3V 300mA VIN=5.0V, IOUT2=10mA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA 10mA 300mA>
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
10mA
CH2
10mA
200 sec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div
400 sec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div
PWM/PFM Switching Control
FOSC=300kHz, VOUT2=3.3V 300mA VIN=5.0V, IOUT2=10mA
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA 10mA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
10mA
CH2
10mA
200 sec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div
200 sec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div
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XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) < VOUT2=0.9V, VIN=3.3V, IOUT2=100 A PWM Control 300mA>
FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=100 A 300mA
FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA 100 A
CH1
0.9V CH1 0.9V
300mA
300mA
CH2
100
A
CH2
100
A
200 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
4msec/div CH1: VOUT2, AC-COUPLED, 20mV/di CH2: IOUT2, 150mA/div
PWM/PFM Switching Control
FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=100 A 300mA
FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA 100 A
CH1
0.9V CH1 0.9V
300mA
300mA
CH2
100
A
CH2
100
A
200 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
4msec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
38/43
XC9502
Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued) < VOUT2=0.9V, VIN=3.3V, IOUT2=10mA 300mA>
PWM Control FOSC=300kHz, VOUT2=0.9V 300mA VIN=3.3V, IOUT2=10mA FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA 10mA
CH1
0.9V CH1
0.9V
300mA
300mA
CH2
10mA
CH2
10mA
100 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div PWM/PFM Switching Control
100 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
FOSC=300kHz, VOUT2=0.9V 300mA VIN=3.3V, IOUT2=10mA
FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA 10mA
CH1
0.9V CH1 0.9V
300mA
300mA
CH2
10mA
CH2
10mA
200 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
200 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div
39/43
XC9502 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(26) Load Transient Response (Continued)
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA, PWM2 'L' 'H'
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA, PWM2 'H' 'L'
CH1
CH1 3.3V
3.3V
0.65V CH2 0V CH2
0.65V
0V
400 sec/div CH1: VOUT2, AC-COUPLED, 10mV/div CH2: PWM2, 0.5V/div
200 sec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: PWM2, 0.5V/div

FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA, EN2 'L' 'H' CIN=47 F
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100mA, EN2 'L' 'H' CIN=47 F
3.3V CH1 200mA
3.3V
CH1
75mA CH2 0.65V CH3 CH2 0.65V
4ms/div CH1: VOUT2, 2.0V/div CH2: IIN2, 100mA/div CH3: EN2, 0.5V/div * EN1=GND
4ms/div CH1: VOUT2, 2.0V/div CH2: IIN2, 50mA/div CH3: EN2, 0.5V/div
40/43
XC9502
Series
PACKAGING INFORMATION
MSOP-10 USP-10
* Soldering fillet surface is not formed because the sides of the pins are not plated.
USP-10 Recommended Pattern Layout
2.3
USP-10 Recommended Metal Mask Design
41/43
XC9502 Series
MARKING RULE
MSOP-10, USP-10
Represents product series
MARK 3
PRODUCT SERIES XC9502B09xxx
Represents type of DC/DC converter MARK B PRODUCT SERIES XC9502B09xxx
,
Represents FB voltage MARK VOLTAGE (V) 9 0.9 PRODUCT SERIES XC9502B09xxx
MSOP-10 (TOP VIEW)
USP-10 (TOP VIEW)
0
Represents oscillation frequency MARK 2 3 5 OSCILLATION FREQUENCY (kHz) 180 300 500 PRODUCT SERIES XC9502B092xx XC9502B093xx XC9502B095xx
Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W expected) Note: No character inversion used.
42/43
XC9502
Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
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