The AP4313 is a highly integrated solution for a con-stant voltage/constant current mode SMPS application.The AP4313 contains one 1.21V voltage reference
with ±1% accuracy, one current sensing circuit and twooperational amplifiers. Combining the voltage refer-ence with one operational amplifier makes AP4313 anideal voltage controller for use in adapters and batterychargers. The other low voltage reference combinedwith the other operational amplifier makes it an idealcurrent limiter for output low side current sensing.The AP4313 is available in SOT-23-6 package.
Features
····
Constant Voltage and Constant Current ControlPrecision Internal Voltage ReferenceFew External Components Easy Compensation
Applications
··
Adapters
Battery Chargers
SOT-23-6
Figure 1. Package Type of AP4313
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Preliminary Datasheet Pin Configuration
K Package (SOT-23-6) VCTRL
GND VOUT
12365VCCVSENSE
I4CTRL
Figure 2. Pin Configuration of AP4313 (Top View)
Pin Description
Pin Number
123456
Pin NameVCTRLGNDVOUTICTRL VSENSE
Input pin of the voltage control loopGround
Output pin. Sinking current onlyInput pin of the current control loopInput pin of the current control loop
Function
VCC Power supply
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Preliminary Datasheet Functional Block Diagram
VCC61.210V3VOUT
1 VCTRL
200mV2GND
45 ICTRL
VSENSE
Figure 3. Functional Block Diagram of AP4313
Ordering Information
AP4313 - Circuit Type
E1: Lead FreeBlank: Tin LeadTR: Tape and ReelPackageK: SOT-23-6PackageSOT-23-6
Temperature Range0 to 70oC
Part Number
Tin LeadAP4313KTR
Lead FreeAP4313KTR-E1
Tin LeadK6G
Marking ID
Lead FreeE6G
Packing TypeTape & Reel
BCD Semiconductor's Pb-free products, as designated with \"E1\" suffix in the part number, are RoHS compliant.
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Preliminary Datasheet Absolute Maximum Ratings (Note 1)
Parameter Power Supply VoltageInput Voltage Junction TemperatureStorage Temperature
Lead Temperature (Soldering, 5sec)
Package Thermal Resistance (Junction to Case)
SymbolVCCVINTJTSTGTLEADθJC
Value20-0.3 to VCC
150-65 to 15026092
o
UnitVV
oCoCoC
C/W
Note 1: Stresses greater than those listed under \"Absolute Maximum Ratings\" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicatedunder \"Recommended Operating Conditions\" is not implied. Exposure to \"Absolute Maximum Ratings\" for extended periodsmay affect device reliability.
Recommended Operating Conditions
Parameter
Power Supply Voltage Operating Temperature Range
SymbolVCCTA
Min 2.5
0
Max1870
UnitV
oC
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Preliminary Datasheet Electrical Characteristics
(VCC=5V, TA=25oC, unless otherwise specified.)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
TOTAL CURRENT CONSUMPTION Total Supply Current
Not Including the Output SinkingCurrent
VOLTAGE CONTROL LOOPTransconduction Gain (VCTRL).Sink Current Only
Voltage Control Loop ReferenceInput Bias Current (VCTRL)CURRENT CONTROL LOOPTransconduction Gain (ICTRL).Current Control Loop ReferenceCurrent Out of Pin ICTRL at -200mV
OUTPUT STAGE
Low Output Voltage at 10mASinking Current
Output Short Circuit Current.Output to VCC. Sink Current Only
VOLIOS
20027
50
mVmA
GmiVSENSEIIBI
IOUT=2.5mA
1.5196
720025
204
mA/mVmVµA
GmvVREFIIBV
11.198
3.51.2150
1.222
mA/mVVnA
ICC
0.6
1.2
mA
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Preliminary Datasheet Typical Performance Characteristics
1.2252022012001.220 VCC=12V VCC=5V VCC=2.5V1.2151.210VSENSE (V)VREF (V)1991981971.2051.200196195-401.195-40-200204060o80100120-200204060o80100120Ambient Temperature (C)Ambient Temperature (C)Figure 4. VREF vs. Ambient Temperature Figure 5. VSENSE vs. Ambient Temperature
804560 VCC=12V VCC=5V VCC=2.5V40 VCC=12V VCC=5V VCC=2.5V4035IIBV (nA)20IIBI (µA)-200204060o30025-2020-40-408010012015-40-200204060o80100120Ambient Temperature (C)Ambient Temperature (C)Figure 6. VCTRL Pin Input Bias Current vs. Ambient Temperature Figure 7. ICTRL Pin Input Bias Current vs. Ambient Temperature
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Preliminary Datasheet Typical Performance Characteristics (Continued)
601.61.41.250 VCC=12V VCC=5V VCC=2.5V401.0IOS (mA)30ICC (mA) VCC=12V VCC=5V VCC=2.5V-200204060o0.80.60.40.20.0-4020100-4080100120-200204060o80100120Ambient Temperature (C)Ambient Temperature (C)Figure 8. Output Short Circuit Current vs. Ambient Temperature
Figure 9. Supply Current vs. Ambient Temperature
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Preliminary Datasheet Typical Application
VOUTTo primaryAP4313VCCR21.210VR4VOUTR3C2470K22pFC1VCTRL2.2nFLoad200mVGNDICTRLVSENSEC32.2nFR522KR1R6500GNDR7Figure 10. Typical Application of AP4313
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Preliminary Datasheet Mechanical Dimensions
SOT-23-6
Unit: mm(inch)
2.820(0.111)3.020(0.119)0.300(0.012)0.400(0.016)0.300(0.012)0.600(0.024)0°8°0.200(0.008)2.650(0.104)2.950(0.116)0.700(0.028)REF0.950(0.037)TYP1.800(0.071)2.000(0.079)0.000(0.000)0.100(0.004)0.100(0.004)0.200(0.008)1.050(0.041)1.050(0.041)1.150(0.045)1.250(0.049)Nov. 2005 Rev. 1. 0
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1.500(0.059)1.700(0.067)BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for anyparticular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or useof any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights orother rights nor the rights of others.
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