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XC9303 Series
! Synchronous Step-up & down DC / DC Controller ! Input Voltage Range 2.0V ~ 10.0V ! Output Voltage Externally Set-up ! Oscillation Frequency 300 kHz (Accuracy 15%) ! Maximum Duty Cycle 78% (TYP.) ! PWM, PWM/PFM Swiching Control ! Syncronous Rectification Control ! High Efficiency 84% (TYP.) ! Small MSOP-8 packaging
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
July 3, 2003 Ver. 1
" APPLICATIONS
# PDAs # Palmtop computers # Portable Audio # Various power supplies
" GENERAL DESCRIPTION
The XC9303 series is highly efficient, synchronous PWM, PWM/PFM switching step-up & down DC/DC controller ICs. A versatile, large output current and high efficiency, step-up/down DC/DC controller can be realized using only basic external components - transistors, coil, diode, capacitors, and resistors for detecting voltages. High efficiency is obtained through the use of a synchronous rectification topology. The operation of the XC9303 series can be switched between synchronous PWM and synchronous PWM/PFM (autoswitching) externally using PWM pin. In PWM/PFM mode the XC9303 automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of output loads conditions. Output noise can be easily reduced with PWM control since the frequency is fixed. The XC9303 has a 0.9V (2.0%) internal voltage supply and using externally connected components, output voltage can be set freely between 2.0V to 6.0V. With an internal 300kHz switching frequency smaller external components can be used. Soft-start time is internally set to 10msec and offers protection against in-rush currents when the power is switched on and prevents voltage overshoot.
" FEATURES
Input Voltage Range Output Voltage Range : 2.0V ~ 10V : 2.0V ~ 6.0V Can be set freely with 0.9V (2.0%) of reference voltage supply and external components. : 300kHz 15%
Oscillation Frequency Output Current
: More than 800mA (VIN = 4.2V, VOUT=3.3V)
Stand-By Function Package Soft-start time
: 3.0A (MAX.) : MSOP-8 : 10 ms (internally set)
" TYPICAL APPLICATION CIRCUIT
<XC9303B093K, VOUT:3.3V)
" TYPICAL PERFORMANCE CHARACTERISTICS
$ Efficiency vs. Output Current
XC9303B093K(300kHz, VOUT=3.3V)
Tr1:Pch MOSFET :CPH6315 Tr2:Nch MOSFET :CPH3409 CIN :47uF Tr3:Nch MOSFET :CPH3409 CFB : 62pF L:22uH CDRH127/LD SD:CMS02 V OUT : 3. 3V
100 90 80 70 60 50 40 30 20 10 0
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
EXT 1 V DD PWM CE V IN :2.0V~10V P WM CE
EXT 2 GND FB NC
RFB :200 k CL: 47uF X 2
Efficiency EFFI (%)
RFB :75 k
VIN=2.7V PWM Control
4.2V
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
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Semiconductor Ltd.
XC9303 Series
" PIN CONFIGURATION
1 EXT1 2 VDD 3 PWM 4 CE EXT2 8 GND 7 FB 6 NC 5
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
MSOP-8A (TOP VIEW)
" PIN ASSIGNMENT
PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME EXT 1 / VDD PWM CE NC FB GND EXT2 FUNCTIONS External Transistor Drive Pin Supply Voltage PWM/PFM Switching Pin Chip Enable Pin No Connection Output Voltage Monitor Feedback Pin Ground External Transistor Drive Pin
" ORDERING INFORMATION XC9303123456
DESIGNATOR SYMBOL DESCRIPTION
1 2 3 4 5 6
B 0 9 3 K R L
Standard FB Voltage 0.9V Switching Frequency 300kHz Package Embossed Tape MSOP-8A Standard Feed Reverse Feed
" PACKAGE INFORMATION
0.53 + 0.13 3.00 + 0.10 4.90 + 0.10 3.00 + 0.10
0~6
O
$ MSOP-8A
0.15 +0.08 -0.02 -
0.86 -0.10
+0.11
0.30
+0.08 -0.02
(0.65)
0.00 ~ 0.20
+0.20 1.02 -0.21
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Semiconductor Ltd.
XC9303 Series
" BLOCK DIAGRAM
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
EXT1/
Synchronous blanklogic
EXT2
Error Amp
PWM Comparator
FB
+ -
+ -
PWM/PFM Controller
PWM
VIN CE
Vref=0.9V withSoft Start, CE CE to internal circuit R amp Wave Generator, OSC
GND
" ABSOLUTE MAXIMUM RATINGS Ta=25OC
PARAMETER VDD Pin Voltage FB Pin Voltage CE Pin Voltage PWM Pin Voltage MODE Pin Voltage EXT1, 2 Pin Voltage EXT1, 2 Pin Current Power Dissipation Operating Ambient Temperature Storage Temperature SYMBOL VDD VFB VEN VPWM VEXT VEXT IEXT Pd Topr Tstg RATINGS - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ VDD + 0.3 100 150 - 40 ~ + 85 - 55 ~ +125 UNITS V V V V V V mA mW
O
C C
O
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Semiconductor Ltd.
XC9303 Series
" ELECTRICAL CHARACTERISTICS XC9303B093
PARAMETER Supply Voltage Maximum Input Voltage Output Voltage Range(note 1) Supply Current 1 Supply Current 2 Stand-by Current Oscillation Frequency FB Voltage Minimum Operation Voltage Maximum Duty Ratio Minimum Duty Ratio PFM Duty Ratio Efficiency1 (note 2 ) Soft-Start Time EXT1 "High" ON Resistance EXT1 "Low" ON Resistance EXT2 "High" ON Resistance EXT2 "Low" ON Resistance PWM "High" Voltage PWM "Low" Voltage CE "High" Voltage CE "Low" Voltage CE "High" Current CE "Low" Current PWM "High" Current PWM "Low" Current FB "High" Current SYMBOL VDD VIN VOUTSET IDD1 IDD2 ISTB FOSC VFB VINmin MAXDTY MINDTY PFMDTY EFFI TSS REXTBH1 REXTBL1 REXTBH2 REXTBL2 VPWMH VPWML VCEH VCEL ICEH ICEL IPWMH IPWML IFBH PWM=0V CE = 0V Same as IDD1 Same as IDD2 No Load, VPWM=0V IOUT1=300mA (note 3) VOUT x 0.95V, CE=0V0.65V CE1 = 0, EXT1= VDD - 0.4V FB = 0V, EXT1 = 0.4V EXT2 = VDD - 0.4V CE = 0V, EXT2 = VDD - 0.4V No Load No Load FB = 0V FB = 0V MODE = 0V MODE = 0V VIN 2.0V, IOUT=1mA FB = 0V FB = 1.0V Same as IDD1, CE = 0V Same as IDD1 VIN=3.0V, IOUT=10mA CONDITIONS
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
(FOSC = 300kHz) MIN. 2.0 10.0 VOUT 2.0 255 0.882 72 22 5.0 0.65 0.65 -
TYP. 90 55 300 0.900 78 30 84 10.0 26 19 23 19 -
MAX. 10.0 6.0 170 110 3.0 345 0.918 2.0 88 0 38 20.0 37 30 31 30 0.20 0.2 0.5 - 0.5 0.5 - 0.5 0.50 - 0.50
Ta=25OC TEST UNITS CIRCUIT V V V A A A kHz V V % % % % mS V V V V A A A A A A
1 1 1 2 2 2 2 3 1 2 2 4 4 4 5 5 5 5 4 4 2 2 2 2 2 2 2 2
FB "Low" Current IFBL FB = 1.0V Unless otherwise stated, VDD = 3.0V, CE = 3.0V, PWM = 3.0V, FB = 3.0V, EXT1, 2=OPEN, VIN=2.7V
Notes 1) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
3)
Tr1 : CPH6315 Tr2 : CPH3409 Tr3 : CPH3409 SD : CMS02 L : 22H CL : 16V, 47F x 2 CIN : 16V, 47F
(SANYO) (SANYO) (SANYO) (TOSHIBA) (SUMIDA CDRH127/LD) (NICHICEMI Tantalum MCE Series) (NICHICEMI Tantalum MCE Series)
RFB1 : 200k RFB2 : 75k CFB : 62pF
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Semiconductor Ltd.
XC9303 Series
" OPERATIONAL DESCRIPTION
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
The XC9303 series are synchronous step-up & 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 oscillation frequency which in turn generates the source 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 PWM 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 PWM 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 synchronous, blank logic circuit is to prevent penetration of the transistor connected to EXT1 and EXT2.

The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to page 8). 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 CE pin is 0.2V or less, the mode will be chip disable, the channel's operations will stop. The EXT1 pin will be kept at a highlevel (the external P-type MOSFET will be OFF) and the EXT2 pin will be kept at a lowlevel (the external N-type MOSFET will be OFF). When CE pin is in a state of chip disable, current consumption will be no more than 3.0A. When the CE 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.
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Semiconductor Ltd.
XC9303 Series
" HOW TO USE
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
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 1 M or less. VOUT = 0.9 x ( RFB11 + RFB12 ) / RFB12 The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 x x CFB1 x 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] [Typical Example] When RFB11 = 200k and RFB12 = 75k, VOUT1 = 0.9 x ( 200K + 75k ) / 75k = 3.3V. VOUT (V) 2.0 2.2 2.5 2.7 3.0 RFB11 (k) 330 390 390 360 560 RFB12 (k) 270 270 220 180 240 CFB1 (pF) 39 33 33 33 24 VOUT (V) 3.3 5.0 RFB11 (k) 200 82 RFB12 (k) 75 18 CFB1 (pF) 62 160
[External Components] Tr 1 : CPH6315 Tr 2 : CPH3409 Tr 3 : CPH3409 Note : (Pch MOSFET : SANYO), (Nch MOSFET : SANYO), (Nch MOSFET : SANYO), IRLM6702 (Pch MOSFET : IR) IRLM1902 (Nch MOSFET : IR) IRLM2502 (Nch MOSFET : IR)
VGS Breakdown Voltage of CHPH6315 and CPH3409 is 10V so please be careful with the power supply voltage. For the power supply voltage more than 8V, CPH3308 (Pch MOSFET : SANYO) or CPH3408 (Nch MOSFET : SANYO) which breakdown voltage is 20V are recommended.
L: CL :
22H 16V, 47F x 2
(SUMIDA CDRH127 / LD) (NICHICEMI Tantalum MCE Series)
CIN : SD :
16V, 47F CMS02
(NICHICEMI Tantalum MCE Series) (TOSHIBA, Schottky Barrier Diode)
" EXTERNAL COMPONENTS
$ COIL PART NUMBER CDRH127 / LD-220 MANUFACTURER SUMIDA L VALUE (H) 22 SERIAL RATED CURRENT (A) RESISTANCE () 36.4 m 4.7 CAPACITANCE (F) 47 W x L (mm) 12.3 x 12.3 H (mm) 8
$ INPUT / OUTPUT CAPACITANCE PART NUMBER 16MCE476MD2 MANUFACTURER NICHICHEMI VOLTAGE (V) 16.0 W x L (mm) 4.6 x 5.8 H (mm) 3.20.2
$ SCHOTTKY BARRIER DIODE PART NUMBER CMS02 MANUFACTURER TOSHIBA
REVERSE CURRENT FORWARD CURRENT
Vfmax (V) 0.4 (IF=3A)
Irmax (A) 0.5m (VR=30V)
W x L (mm) 2.4 x 4.7
H (mm) 0.980.1
30
3
$ TRANSISTOR (Pch MOSFET) PART NUMBER CPH6315 CPH3308 IRLMS6702 MANUFACTURER SANYO SANYO IR ABSOLUTE MAX. RATINGS VDSS (V) VGSS (V) ID (A) 10 - 20 -3 20 - 30 -4 12 - 20 - 2.3 Rds (ON) MAX.(m) 150 (VDS= - 4.0V) 140 (VDS= - 4.0V) 200 (VDS= - 4.5V) Cisss typ (pF) 410 (VDC= - 10V) 560 (VDC= - 10V) 210 (VDC= - 15V) VGS (off) (V) - 1.4 (MAX.) - 2.4 (MAX.) - 0.7 (MAX.) PKG. CPH6 CPH3 Micro6
$ TRANSISTOR (Nch MOSFET) PART NUMBER CPH3409 CHP3408 MANUFACTURER SANYO SANYO ABSOLUTE MAX. RATINGS VDSS (V) VGSS (V) ID (A) 10 30 5 20 30 5 Rds (ON) MAX.(m) 42 (VDS=4.0V) 68 (VDS=4.0V) Cisss typ (pF) 630 (VDC= 10V) 480 (VDC= 10V) VGS (off) (V) 1.3 (MAX.) 2.4 (MAX.) PKG. CPH6 CPH3
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Semiconductor Ltd.
XC9303 Series
" TEST CIRCUITS
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
Circuit 1
PNP Tr1 Tr2:Nch MOSFET SBD CIN Tr3 :NchMOSFET A EXT1 V DD CIN PWM CE VIN EXT2 GND FB NC CL RFB2 CFB RL RFB1 V L SBD VOUT
Circuit 2
EXT1 A V DD PWM A OSC 1F VDD V P WM VCE A A CE
EXT2 GND FB NC A OSC
2200pF
Circuit 3
L Tr1:Pch MOSFET Tr2:Nch MOSFET SBD CIN Tr3:NchMOSFET A EXT1 VDD CIN PWM CE VIN EXT2 V GND FB NC CL RL A SBD V OUT
Circuit 5
EXT1 VDD Rp
OS C
510
VEXT1 1 F
D
VFB
Circuit 4
Tr1:Pch MOSFET Tr2:Nch MOSFET SBD CIN Tr3:NchMOSFET A EXT1 VDD CIN OSC V IN VPWM VCE PWM CE EXT2 GND FB NC 75k 62 p F V CL RL 200k A L SBD V OUT
EXT2 GND FB NC VEXT2 VFB
OSC
Rp
PWM CE VD VCE VPWM
Circuit 1 :
L: SD: CL: CIN: Tr 2 : Tr 3 : RFB : 22H (SUMIDA CDRH127 / LD) CMS02 (TOSHIBA, Schottky Barriar Diode) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) CPH3409 (SANYO) CPH3409 (SANYO) Please use by the conditions as below. RFB1 + RFB2 1M RFB1 / RFB2 = (Setting Output Voltage / 0.9) -1 CFB : fztb = 1 / (2 x x CFB x RFB1) =1kHz ~ 50kHz (12kHz usual)
PNP Tr 1 : 2SA1213 (TOSHIBA)
Circuit 3 :
L: SD: CL: CIN: Tr 1 : Tr 2 : Tr 3 : 22H (SUMIDA CDRH127 / LD) CMS02 (TOSHIBA, Schottky Barriar Diode) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) CPH6315 (SANYO) CPH3409 (SANYO) CPH3409 (SANYO)
Circuit 4 :
L: SD: CL: CIN: Tr 1 : Tr 2 : Tr 3 : 22H (SUMIDA CDRH127 / LD) CMS02 (TOSHIBA, Schottky Barriar Diode) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) 16MCE476MD2 (NIHONCHEMICON, Tantalum Type) CPH6315 (SANYO) CPH3409 (SANYO) CPH3409 (SANYO)
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Semiconductor Ltd.
XC9303 Series
" NOTES ON USE 1. PWM/PFM Automatic Switching
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
If PWM/PFM automatic switching control is selected and the step-down ratio is high (e.g., from 10 V to 1.0 V), the control mode remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9303 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9303 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.
2. Ratings
Use the XC9303 series and peripheral components within the limits of their ratings.
3. Notes on How to Select Transistor
Synchronous rectification operation prepares fixed time when switching changes so that the high side PchMOSFET and the low side NchMOSFET do not oscillate simultaneously. Also it is designed to prevent the penetratation current when the both MOSFET oscillate at the same time. However, some MOSFET may oscillate simultaneously and worsen efficiency. Please select MOSFET with high Vth with small input capacity on high side PchMOSFET and the low side NchMOSFET. (When using with large current, please note that there is a tendency for ON resistance to become large when the input capacity of MOSFET is small and Vth is high.)

In order to check that MOSFET is not oscillating simultaneously, please observe Lx terminal waveform of coil current at the time of the continuation mode. If the MOSFET parasitism diode waveform on Lx terminal waveform can be formed in the period EXT 1 is 'H' and EXT2 is 'L', it can be thought that MOSFETs are not oscillating simultaneously.
CH1 : EXT1 CH2 : EXT2
Diode Wave Form
CH3 : Lx
" TYPICAL APPLICATION CIRCUIT
Tr1:Pch
MOSFET
Lx P i n
SD V OUT
Tr2:Nch
MOSFET CIN Tr3:Nch MOSFET CFB RF B 1
EXT1 VDD
EXT2
CL
GND F B NC
P WM CE VIN
PWM CE
RF B 2
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Semiconductor Ltd.
XC9303 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
FOSC=300kHz, VOUT=3.3V L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409 3.5 Output Voltage VOUT (V) Efficiency EFFI (%) 3.4 3.3 3.2 3.1 3.0 0.1 1 10 100 1000 10000 Output Current IOUT (mA)
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
5.2 4.2V 5.0V 5.1 5 4.9 4.8 4.7 0.1 1 10 100 1000 10000 Output Current IOUT (mA) VIN=3.0V 4.2V 6.0V
PWM/PFM Switching Control PWM Control
VIN=2.7V
3.3V
FOSC=300kHz, VOUT=3.3V L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502 3.5 Output Voltage VOUT (V) 3.4 3.3 3.2 3.1 3.0 0.1 1 10 100 1000 10000 Output Current IOUT (mA)
PWM/PFM Switching Control PWM Control
4.2V
VIN=2.7V
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Semiconductor Ltd.
XC9303 Series
(2) Efficiency vs. Output Current FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
PWM/PFM Switching Control PWM Control
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency EFFI (%)
Efficiency EFFI (%)
PWM/PFM Switching Control PWM Control
5.0V
VIN=2.7V
3.3V
4.2V
100 90 80 70 60 50 40 30 20 10 0
VIN=3.0V 4.2V
6.0V
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100 90 Efficiency EFFI (%) 80 70 60 50 40 30 20 10 0 0.1
PWM/PFM Switching Control PWM Control
4.2V VIN=2.7V
1
10
100
1000
10000
Output Current IOUT (mA)
10
Semiconductor Ltd.
XC9303 Series
(3) Ripple Voltage vs. Output Current FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
PWM Control
100
PWM/PFM Switching Control
Ripple Voltage (mV)
60 40 20 0 0.1
VIN=2.7V 3.3V 4.2V 5.0V
Ripple Voltage (mV)
80
80 60 40 20 0 VIN=2.7V 3.3V 4.2V 5.0V
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
PWM Control
100
PWM/PFM Switching Control
Ripple Voltage (mV)
60 40 20 0 0.1
VIN=3.0V 4.2V 6.0V
Ripple Voltage (mV)
80
80 60 40 20 0
VIN=3.0V 4.2V 6.0V
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02 Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100
PWM Control
100 4.2V Ripple Voltage (mV) 80 VIN=2.7V 60 40 20 0 0.1 1 10 100 1000 10000 0.1 1 10 100 1000 10000 Output Current IOUT (mA) Output Current IOUT (mA)
PWM/PFM Switching Control
4.2V
Ripple Voltage (mV)
80 60 40 20 0
VIN=2.7V
Semiconductor Ltd.
11
XC9303 Series
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
(4) Supply Current 1 vs. Supply Voltage XC9303B093 (300kHz)
(5) Supply Current 2 vs. Supply Voltage XC9303B093 (300kHz) Supply Current 2 IDD2 (uA) 300 250 200 150 100 50 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=85OC 25OC - 40OC
600
Supply Current 1 IDD1 (uA)
500 400 300 200 100 0 0
Topr=85OC 25OC - 40OC
Supply Voltage VDD (V)
2
4
6
8
10
(6) Stand-by Current vs. Supply Voltage XC9303B093 (300kHz) 10 8 6 4 2 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=85 C 25OC - 40OC
O
(7) Softstart Time vs. Supply Voltage XC9303B093 (300kHz) 25 20 15 10 5 0 0 2 4 6 8 Supply Voltge VDD (V) 10
Stand-by Current ISTB (uA)
(8) CE 'H' 'L' Voltage vs. Supply Voltage XC9303B093 (300kHz)
(9) PWM 'H' 'L' Voltage vs. Supply Voltage XC9303B093 (300kHz) PWM 'H' 'L' Voltage VPWM (V) 0.8 0.6 0.4 0.2 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=25O 85OC
0.8 CE 'H' 'L' Voltage VCE (V) 0.6 0.4 0.2 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=25O 85 C
O
Softstart Time TSS (msec)
-40OC
-40OC
(10) Maximum Duty Ratio vs. Supply Voltage XC9303B093 (300kHz)
(11) Oscillation Frequency vs. Supply Voltage XC9303B093 (300kHz) Oscillation Frequency Fosc (kHz) 360 330 85OC 300 270 240 0 12 2 4 6 8 Supply Voltage VDD (V) 10
Semiconductor Ltd.
MAX. Duty Ratio Maxdty (%)
90 85 80 75 70 65 0 2 4 6 8 10 Topr=85OC 25OC - 40OC
Topr=25O -40OC
Supply Voltage VDD (V)
XC9303 Series
(12) EXT 1 High ON Resistance vs. Supply Voltage XC9303B093 (300kHz) EXT1 'H' ON Resisitance
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
(13) EXT1 Low ON Resistance vs. Supply Voltage XC9303B093 (300kHz) EXT1 'L' ON Resistance 80 EXT1 L ON Resistance () Topr=85OC 25OC - 40OC
80 EXT1 H ON Resistance() 60 40 20 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=85OC 25OC - 40OC
60 40 20 0 0
2 4 6 8 Supply Voltage VDD (V)
10
(14) EXT2 High ON Resistance vs. Supply Voltage XC9303B093 (300kHz) EXT2 'H' ON Resistance
(15) EXT2 Low ON Resistance vs. Supply Voltage XC9303B093 (300kHz) EXT2 'L' ON Resistance EXT2 L ON Resistance () 80 60 40 20 0 Topr=85OC 25OC - 40OC
80 EXT2 H ON Resistance() 60 40 20 0 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=85 C 25OC - 40OC
O
0
2 4 6 8 Supply Voltage VDD (V)
10
(16) Output Voltage vs. Ambient Temperature 1 XC9303B093(300kHz) Output Voltage VOUT (V)
(17) Output Voltage vs. Ambient Temperature 2 XC9303B093(300kHz) Output Voltage VOUT (V) 1.1 1.0 0.9 0.8 0.7 0.6
L=22uH(CDRH127/LD), CL=94uF(Tantalum) Tr1:CPH6315, Tr2:CPH3409,Tr3:CPH3409
3.5 3.4 3.3 3.2 3.1 3.0
L=22uH(CDRH127/LD), CL=94uF(Tantalum) Tr1:CPH6315, Tr2:CPH3409,Tr3:CPH3409
VIN=5.0V IOUT=200mA
VIN=3.3V IOUT=200mA
-50
-20 10 40 70 Ambient Temperature Ta ( OC)
100
-50
-20 10 40 70 Ambient Temperature Ta ( OC)
100
(18) PFM Duty Ratio vs. Supply Voltage XC9303B093(300kHz) 40 PFM Duty Ratio (%) 35 30 25 20 0 2 4 6 8 Supply Voltage VDD (V) 10 Topr=85OC 25OC - 40OC
13
Semiconductor Ltd.
XC9303 Series
LOAD TRANSIENT RESPONSE < VOUT1, 2 = 3.3 V, VIN = 5.0V
Synchronous PWM Control FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100mA 100A
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
IOUT1, 2 = 100A
100mA >
FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100A 100mA
CH1
3.3V
CH1
3.3V
100mA CH2
100mA
100A
CH2
100A
10msec/div CH1:VOUT, AC-COUPLED,100mV/div CH2:IOUT, 50mA/div
200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
Synchronous PWM/PFM Switching Control FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100mA 100A FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100A 100mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2 100A 10msec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
CH2
100A 200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
14
Semiconductor Ltd.
XC9303 Series
< VOUT1, 2 = 3.3 V, VIN = 5.0V
Synchronous PWM Control FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=300mA 100A
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
IOUT1, 2 = 100A
300mA >
FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100A 300mA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2 100A 10msec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 150mA/div
CH2
100A
200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 150mA/div
Synchronous PWM/PFM Switching Control FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=300mA 100A FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT=100A 300mA
3.3V CH1
CH1 3.3V
300mA
300mA
CH2
CH2 100A 10msec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 150mA/div 200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 150mA/div
100A
Semiconductor Ltd.
15
XC9303 Series
< VOUT1, 2 = 3.3 V, VIN = 2.7V
Synchronous PWM Control FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=100mA 100A
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
IOUT1, 2 = 100A
100mA >
FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=100A 100mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2
100A 10msec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
CH2
100A
200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
Synchronous PWM/PFM Switching Control FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=100mA 100A FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=100A 100mA
CH1
3.3V
CH1
3.3V
300mA
100mA
CH2
100A 10msec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
CH2
100A 200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 50mA/div
16
Semiconductor Ltd.
XC9303 Series
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
< VOUT1, 2 = 3.3 V, VIN = 2.7V
Synchronous PWM Control
IOUT1, 2 = 100A
300mA >
FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=300mA 100A
FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT=100A 300mA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
100A 10msec/div CH1:VOUT, AC-COUPLED,100mV/div CH2:IOUT, 150mA/div
CH2
100A 200sec/div CH1:VOUT, AC-COUPLED, 100mV/div CH2:IOUT, 150mA/div
Synchronous PWM/PFM Switching Control FOSC=300kHz, VOUT=2.7V VIN=2.7V, IOUT=100A 300mA
FOSC=300kHz, VOUT=2.7V VIN=2.7V, IOUT=300mA 100A
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
100A
CH2
100A
10msec/div CH1:VOUT, AC-COUPLED, 20mV/div CH2:IOUT, 150mA/div
200sec/div CH1:VOUT, AC-COUPLED, 20mV/div CH2:IOUT, 150mA/div
17
Semiconductor Ltd.
XC9303 Series
< PWM Control PWM / PFM Switching Control >
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT =1mA PWM 'H'
'L'
FOSC=300kHz, VOUT=3.3V VIN=5.0V, IOUT =1mA PWM 'L' 'H'
3.3V CH1
CH1
3.3V
0.65V
0.65V
CH2
0V
CH2
0V
1msec/div CH1:VOUT, AC-COUPLED, 20mV/div CH2:PWM, 0.3V/div
1msec/div CH1:VOUT, AC-COUPLED, 20mV/div CH2:PWM, 0.3V/div
< Softstart Wave Form >
FOSC=300kHz, VOUT=3.3V VIN=2.7V, IOUT =300mA CE 'L' 'H' CIN = 47F
FOSC=300kHz, VOUT=3.3V VIN=4.2V, IOUT =300mA CE 'L' 'H' CIN = 47F 3.3V
3.3V
CH1 410mA
CH1
230mA
CH2 0.65V CH3 10ms/div CH1:VOUT, DC-COUPLED, 2.0V/div CH2:IIN, 200mA/div CH3:CE, 0.5V/div
CH2 0.65V CH3 10ms/div CH1:VOUT, DC-COUPLED, 2.0V/div CH2:IIN, 100mA/div CH3:CE, 0.5V/div
18
Semiconductor Ltd.

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