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Preliminary
RT9013
500mA, Low Dropout, Low Noise Ultra-Fast Without Bypass Capacitor CMOS LDO Regulator
General Description
The RT9013 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and ultra-low dropout. Ideal for portable RF and wireless applications with demanding performance and space requirements. The RT9013 quiescent current as low as 25A, further prolonging the battery life. The RT9013 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. The RT9013 consumes typical 0.7A in shutdown mode and has fast turn-on time less than 40s. The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SOT-23-5, SC-70-5 and WDFN-6L 2x2 package.
Features
Wide Operating Voltage Ranges : 2.2V to 5.5V Low Dropout : 250mV at 500mA Ultra-Low-Noise for RF Application Ultra-Fast Response in Line/Load Transient Current Limiting Protection Thermal Shutdown Protection High Power Supply Rejection Ratio Output Only 1F Capacitor Required for Stability TTL-Logic-Controlled Shutdown Input RoHS Compliant and 100% Lead (Pb)-Free
Applications
CDMA/GSM Cellular Handsets Portable Information Appliances Laptop, Palmtops, Notebook Computers Hand-Held Instruments Mini PCI & PCI-Express Cards PCMCIA & New Cards
Ordering Information
RT9013 Package Type B : SOT-23-5 U5 : SC-70-5 QW : WDFN-6L 2x2 (W-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Fixed Output Voltage 12 : 1.2V 13 : 1.3V 15 : 1.5V 16 : 1.6V : 32 : 3.2V 33 : 3.3V 1B : 1.25V 1H : 1.85V 2H : 2.85V
Note : Richtek Pb-free and Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100% matte tin (Sn) plating. DS9013-05 August 2007
Marking Information
For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail.
Pin Configurations
(TOP VIEW)
VIN GND EN 1 2 3 4 NC 5 VOUT
SOT-23-5 / SC-70-5
EN GND VIN
1 2 3
6 5 4
7
NC NC VOUT
WDFN-6L 2x2
GND
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RT9013
Typical Application Circuit
VIN
Preliminary
VIN CIN 1uF
VOUT COUT 1uF RT9013
VOUT
Chip Enable EN Rpull_down 100k GND NC
Functional Pin Description
Pin Number RT9013-PB RT9013-PU5 5 4 2 RT9013-PQW 4 5, 6 Pin Name VOUT NC Regulator Output. No Internal Connection. Common Ground. The exposed pad must be soldered 2, Exposed Pad (7) GND to a large PCB and connected to GND for maximum power dissipation. 3 1 1 3 EN VIN Enable Input Logic, Active High. When the EN goes to a logic low, the device will be shutdown mode. Supply Input. Pin Function
Function Block Diagram
EN
POR OTP VREF
Current Limit VIN
+
MOS Driver VOUT
GND
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Preliminary Absolute Maximum Ratings
(Note 1)
RT9013
6V 6V 0.4W 0.3W 0.606W 250C/W 333C/W 165C/W 20C/W 260C 125C -65C to 150C 2kV 200V
Supply Input Voltage -----------------------------------------------------------------------------------------------------EN Input Voltage ----------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25C SOT-23-5 -------------------------------------------------------------------------------------------------------------------SC-70-5 ---------------------------------------------------------------------------------------------------------------------WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 4) SOT-23-5, JA --------------------------------------------------------------------------------------------------------------SC-70-5, JA ---------------------------------------------------------------------------------------------------------------WDFN-6L 2x2, JA --------------------------------------------------------------------------------------------------------WDFN-6L 2x2, JC --------------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------Junction Temperature ----------------------------------------------------------------------------------------------------Storage Temperature Range -------------------------------------------------------------------------------------------ESD Susceptibility (Note 2) HBM -------------------------------------------------------------------------------------------------------------------------MM ----------------------------------------------------------------------------------------------------------------------------
Recommended Operating Conditions
(Note 3)
Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.2V to 5.5V Junction Temperature Range -------------------------------------------------------------------------------------------- -40C to 125C Ambient Temperature Range -------------------------------------------------------------------------------------------- -40C to 85C
Electrical Characteristics
(VIN = VOUT + 0.5V, VEN = VIN, CIN = COUT = 1F (Ceramic), TA = 25C unless otherwise specified)
Parameter Input Voltage Range Output Noise Voltage Output Voltage Accuracy (Fixed Output Voltage) Quiescent Current Standby Current Current Limit Dropout Voltage (Note 6) (Note 5)
Symbol VIN VON VOUT IQ ISTBY ILIM VDROP
Test Conditions VOUT = 1.5V, COUT = 1F, IOUT = 0mA IOUT = 10mA VEN = 5V, IOUT = 0mA VEN = 0V RLOAD = 0, 2.2V VIN < 2.6V RLOAD = 0, 2.7V VIN 5.5V IOUT = 400mA, 2.2V VIN < 2.7V IOUT = 500mA, 2.7V VIN 5.5V 1mA < IOUT < 400mA 2.2V VIN < 2.7V 1mA < IOUT < 500mA 2.7V VIN 5.5V
Min 2.2 --2 --0.4 0.5 -----
Typ -30 0 25 0.7 0.5 0.6 160 250 ---
Max 5.5 -+2 50 1.5 0.85 0.85 320 400 0.6
Units V VRMS % A A A A mV
Load Regulation (Note 7) (Fixed Output Voltage)
VLOAD
% 1
To be continued
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RT9013
Parameter EN Threshold Logic-Low Voltage Logic-High Voltage Symbol VIL VIH IEN f = 100kHz PSRR VLINE TSD TSD
Preliminary
Test Conditions Min 0 1.6 -IOUT = 300mA VIN = (VOUT+0.5) to 5.5V, IOUT = 1mA ----Typ --0.1 -40 0.01 170 30 Max 0.6 5.5 1 -0.2 --Units V A dB %/V C
Enable Pin Current Power Supply Rejection Rate Line Regulation Thermal Shutdown Temperature Thermal Shutdown Hysteresis
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. Devices are ESD sensitive. Handling precaution recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. JA is measured in the natural convection at TA = 25C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. The case position of JC is on the exposed pad for the WDFN-6L 2x2 packages. Note 5. Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN - IOUT under no load condition (IOUT = 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin current. Note 6. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV. Note 7. Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested for load regulation in the load range from 10mA to 500mA.
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Preliminary Typical Operating Characteristics
(CIN = COUT = 1/X7R, unless otherwise specified)
RT9013
Quiescent Current vs. Temperature
30 28
Output Voltage vs. Temperature
1.60 1.58 1.56
VIN = 2.5V
VIN = 2.5V
Quiescent Current (uA)
26 24 22 20 18 16 14 12 10
Output Voltage (V)
1.54 1.52 1.50 1.48 1.46 1.44 1.42 1.40 -50 -25 0 25 50 75 100 125
-50
-25
0
25
50
75
100
125
Temperature (C)
Temperature (C)
Dropout Voltage vs. Load Current
350 300
Dropout Voltage vs. Load Current
350
RT9013-33PQW TJ = 125C
RT9013-25PQW TJ = 125C
300
Dropout Voltage (mV)
250
Dropout Voltage (mV)
250 200 150 100 50 0
TJ = 25C
200 150
TJ = 25C
TJ = -40C
100 50 0 0 50 100 150 200 250 300 350 400 450 500
TJ = -40C
0
50
100 150 200 250 300 350 400 450 500
Load Current (mA)
Load Current (mA)
EN Pin Shutdown Response
EN Pin Voltage (V) EN Pin Voltage (V)
VIN = 2.5V, ILOAD = 50mA 4 RT9013-15PQW 2 0 4 2 0
Start Up
VIN = 2.5V, ILOAD = 75mA RT9013-15PQW
Output Voltage (V)
Output Voltage (V)
2 1 0
1.0 0.5 0
Time (100s/Div)
Time (5s/Div)
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RT9013
Line Transient Response
VIN = 2.6V to 3.6V, ILOAD = 10mA
Preliminary
Line Transient Response
VIN = 2.6V to 3.6V, ILOAD = 100mA
Input Voltage Deviation (V)
3.6 2.6
Input Voltage Deviation (V) Output Voltage Deviation (mV)
RT9013-15PQW
3.6 2.6
Output Voltage Deviation (mV)
20 0 -20
20 0 -20 RT9013-15PQW
Time (100s/Div)
Time (100s/Div)
Load Transient Response
VIN = 2.5V, ILOAD = 10mA to 100mA
Load Transient Response
VIN = 2.5V, ILOAD = 10mA to 300mA
Load Current (mA)
100 50 0
Load Current (mA) Output Voltage Deviation (mV)
400 200 0
Output Voltage Deviation (mV)
50 0 -50 RT9013-15PQW
50 0 -50 RT9013-15PQW
Time (100s/Div)
Time (100s/Div)
Noise
VIN = 3.0V (By Battery), No Load 300 300
Noise
VIN = 3.0V (By Battery), ILOAD = 10mA
Noise (V/Div)
Noise (V/Div)
200 100 0 -100 -200 -300 RT9013-15PQW
200 100 0 -100 -200 -300 RT9013-15PQW
Time (10ms/Div)
Time (10ms/Div)
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Preliminary
RT9013
PSRR
VIN = 2.5V to 2.6V
Noise
VIN = 3.0V (By Battery), ILOAD = 300mA 300 200
20 10 0 -10
Noise (V/Div)
PSRR(dB)
100 0 -100 -200 -300 RT9013-15PQW
-20 -30 -40 -50 -60 -70
ILOAD = 100mA ILOAD = 300mA
ILOAD = 10mA
10 100 1000 10000 100000 1000000
Time (10ms/Div)
Frequency (Hz)
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RT9013
Applications Information
Preliminary
Enable The RT9013 goes into sleep mode when the EN pin is in a logic low condition. During this condition, the RT9013 has an EN pin to turn on or turn off regulator, When the EN pin is logic hight, the regulator will be turned on. The supply current to 0.7A typical. The EN pin may be directly tied to VIN to keep the part on. The Enable input is CMOS logic and cannot be left floating. PSRR The power supply rejection ratio (PSRR) is defined as the gain from the input to output divided by the gain from the supply to the output. The PSRR is found to be
Like any low-dropout regulator, the external capacitors used with the RT9013 must be carefully selected for regulator stability and performance. Using a capacitor whose value is > 1F on the RT9013 input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-transient response. The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The RT9013 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 1F with ESR is > 20m on the RT9013 output ensures stability. The RT9013 still works well with output capacitor of other types due to the wide stable ESR range. Figure 1. shows the curves of allowable ESR range as a function of load current for various output capacitor values. Output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT pin of the RT9013 and returned to a clean analog ground.
PSRR = 20 x log Gain Error Supply Note that when heavy load measuring, supply will cause temperature. And temperature will cause output voltage. So the heavy load PSRR measuring is include temperature effect.
Current limit The RT9013 contains an independent current limiter, which monitors and controls the pass transistor's gate voltage, limiting the output current to 0.6A (typ.). The output can be shorted to ground indefinitely without damaging the part. Thermal Considerations Thermal protection limits power dissipation in RT9013. When the operation junction temperature exceeds 170C, the OTP circuit starts the thermal shutdown function and turns the pass element off. The pass element turn on again after the junction temperature cools by 30C. For continuous operation, do not exceed absolute maximum operation junction temperature 125C. The power dissipation definition in device is : PD = (VIN - VOUT) x IOUT + VIN x IQ
Region of Stable COUT ESR vs. Load Current
100
Region of Stable COUT ESR ()
10
Unstable Range
1
Stable Range
0.1
0.01
RT9013-33PB, VIN = 5V CIN = COUT = 1F/X7R
0.001 0 100 200
Unstable Range
300
400
500
Load Current (mA)
The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ambient. The maximum power dissipation can be calculated by following formula : PD(MAX) = ( TJ(MAX) - TA ) /JA
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Figure 1
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Preliminary
Where T J(MAX) is the maximum operation junction temperature, TA is the ambient temperature and the JA is the junction to ambient thermal resistance. For recommended operating conditions specification of RT9013, where T J(MAX) is the maximum junction temperature of the die (125C) and TA is the operated ambient temperature. The junction to ambient thermal resistance JA (JA is layout dependent) for WDFN-6L 2x2 package is 165C/W, SOT-23-5 package is 250C/W and SC-70-5 package is 333C/W on the standard JEDEC 51-3 single-layer thermal test board. The maximum power dissipation at TA = 25C can be calculated by following formula : P D(MAX) = (125C - 25C) / 165 = 0.606 W for WDFN-6L 2x2 packages PD(MAX) = (125C - 25C) / 250 = 0.400 W for SOT-23-5 packages PD(MAX) = (125C - 25C) / 333 = 0.300 W for SC-70-5 packages The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance JA. For RT9013 packages, the Figure 2 of derating curves allows the designer to see the effect of rising ambient temperature on the maximum power allowed.
0.7 0.6
RT9013
Single Layer PCB
Power Dissipation (W)
0.5
SOT-23-5
0.4 0.3 0.2 0.1 0 0 12.5 25 37.5 50
WDFN-6L 2x2
SC-70-5
62.5 75
87.5 100 113 125
Ambient Temperature (C)
Figure 2. Derating Curves for RT9013 Packages
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RT9013
Outline Dimension
Preliminary
H D L C B
b A A1 e
Symbol A A1 B b C D e H L
Dimensions In Millimeters Min 0.889 0.000 1.397 0.356 2.591 2.692 0.838 0.080 0.300 Max 1.295 0.152 1.803 0.559 2.997 3.099 1.041 0.254 0.610
Dimensions In Inches Min 0.035 0.000 0.055 0.014 0.102 0.106 0.033 0.003 0.012 Max 0.051 0.006 0.071 0.022 0.118 0.122 0.041 0.010 0.024
SOT-23-5 Surface Mount Package
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Preliminary
RT9013
H D L C B
b A A1 e
Symbol A A1 B b C D e H L
Dimensions In Millimeters Min 0.800 0.000 1.150 0.150 1.800 1.800 0.650 0.080 0.210 0.260 0.460 Max 1.100 0.100 1.350 0.400 2.450 2.250
Dimensions In Inches Min 0.031 0.000 0.045 0.006 0.071 0.071 0.026 0.003 0.008 0.010 0.018 Max 0.044 0.004 0.054 0.016 0.096 0.089
SC-70-5 Surface Mount Package
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RT9013
Preliminary
D
D2 L
E
E2 SEE DETAIL A
1 e A A1 A3
b
2
1
2
1
DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated.
Symbol A A1 A3 b D D2 E E2 e L
Dimensions In Millimeters Min 0.700 0.000 0.175 0.200 1.950 1.000 1.950 0.500 0.650 0.300 0.400 Max 0.800 0.050 0.250 0.350 2.050 1.450 2.050 0.850
Dimensions In Inches Min 0.028 0.000 0.007 0.008 0.077 0.039 0.077 0.020 0.026 0.012 0.016 Max 0.031 0.002 0.010 0.014 0.081 0.057 0.081 0.033
W-Type 6L DFN 2x2 Package
Richtek Technology Corporation
Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com
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