Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER General Description Features The AP4313 is a highly integrated solution for a constant voltage/constant current mode SMPS application. · · · · · · The AP4313 contains one 1.21V voltage reference with ±1% accuracy, one current sensing circuit and two operational amplifiers. Combining the voltage reference with one operational amplifier makes AP4313 an ideal voltage controller for use in adapters and battery chargers. The other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing. AP4313 Constant Voltage and Constant Current Control Precision Internal Voltage Reference Few External Components Easy Compensation Low Supply Current: 0.5mA Operating Temperature Range: -40 to 105oC Applications · · The AP4313 is available in SOT-23-6 package. Adapters Battery Chargers SOT-23-6 Figure 1. Package Type of AP4313 Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Pin Configuration K Package (SOT-23-6) VCTRL 1 6 VCC GND 2 5 VSENSE VOUT 3 4 ICTRL Figure 2. Pin Configuration of AP4313 (Top View) Pin Description Pin Number Pin Name Function 1 VCTRL 2 GND Ground 3 VOUT Output pin. Sinking current only 4 ICTRL Input pin of the current control loop 5 VSENSE Input pin of the current control loop 6 VCC Input pin of the voltage control loop Power supply Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Functional Block Diagram VCC 6 1.210V 3 1 VOUT VCTRL 200mV 2 GND 5 4 ICTRL VSENSE Figure 3. Functional Block Diagram of AP4313 Ordering Information AP4313 Package SOT-23-6 - Circuit Type E1: Lead Free Blank: Tin Lead Package K: SOT-23-6 TR: Tape and Reel Part Number Marking ID Temperature Range Tin Lead Lead Free Tin Lead Lead Free -40 to 105oC AP4313KTR AP4313KTR-E1 K6G E6G Packing Type Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 3 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Power Supply Voltage VCC 20 V Input Voltage VIN -0.3 to VCC V Junction Temperature TJ 150 oC Storage Temperature TSTG -65 to 150 TLEAD 260 RθJC 92 Lead Temperature (Soldering, 5sec) Package Thermal Resistance (Junction to Case) o C oC o 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 indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Power Supply Voltage Operating Temperature Range Symbol Min Max Unit VCC 2.5 18 V TA -40 105 oC Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 4 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Electrical Characteristics (VCC=5V, TA=25oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit 0.6 1.2 mA TOTAL CURRENT CONSUMPTION Total Supply Current Not Including the Output Sinking Current ICC VOLTAGE CONTROL LOOP Transconduction Gain (VCTRL). Sink Current Only Gmv 1 3.5 Voltage Control Loop Reference VREF 1.198 1.21 Input Bias Current (VCTRL) IIBV mA/mV 1.222 V 50 nA 1.5 7 mA/mV 196 200 CURRENT CONTROL LOOP Transconduction Gain (ICTRL). Current Control Loop Reference Current Out of Pin ICTRL at -200mV Gmi VSENSE IOUT=2.5mA 204 mV IIBI 25 µA Low Output Voltage at 10mA Sinking Current VOL 200 mV Output Short Circuit Current. Output to VCC. Sink Current Only IOS 27 OUTPUT STAGE Apr. 2007 Rev. 1. 5 50 mA BCD Semiconductor Manufacturing Limited 5 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Typical Performance Characteristics 202 1.225 201 1.220 VCC=12V VCC=5V VCC=2.5V 200 VSENSE (mV) VREF (V) 1.215 1.210 199 198 1.205 197 1.200 196 1.195 -40 -20 0 20 40 60 80 100 195 -40 120 -20 0 20 40 60 80 100 120 o Ambient Temperature ( C) o Ambient Temperature ( C) Figure 4. VREF vs. Ambient Temperature Figure 5. VSENSE vs. Ambient Temperature 40 80 VCC=12V VCC=5V VCC=2.5V 60 VCC=12V VCC=5V VCC=2.5V 35 IIBI (µA) IIBV (nA) 40 20 30 25 0 20 -20 -40 -40 -20 0 20 40 60 80 100 15 -40 120 o -20 0 20 40 60 80 100 120 o Ambient 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 Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 6 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Typical Performance Characteristics (Continued) 1.4 60 VCC=12V VCC=5V VCC=2.5V 1.2 50 1.0 ICC (mA) IOS (mA) 40 30 20 VCC=12V VCC=5V VCC=2.5V 10 0 -40 -20 0 20 40 60 80 100 0.8 0.6 0.4 0.2 0.0 -40 120 -20 0 20 40 60 80 100 120 o o Ambient Temperature ( C) Ambient Temperature ( C) Figure 9. Supply Current vs. Ambient Temperature Figure 8. Output Short Circuit Current vs. Ambient Temperature Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 7 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Typical Application VOUT+ To primary R2 AP4313 VCC R4 1.210V R3 VOUT IL C1 + + VCTRL Load C3 GND R5 VSENSE ICTRL R1 R6 500 VOUTRss VOUT = VREF × R1 + R 2 R1 (V) VSENSE RSS (A) CurrentLimit = Figure 10. Typical Application 1 of AP4313 Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 8 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Typical Application VOUT+ To primary AP4313 R2 VCC R4 1.210V R3 VOUT IL C1 + + VCTRL Load C3 GND R5 ICTRL VSENSE R1 R6 500 VOUTRss VOUT = [VREF + ( I L × RSS )] × R1 + R 2 − ( I L × RSS ) R1 CurrentLimit = VSENSE RSS (V) (A) Figure 11. Typical Application 2 of AP4313 Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 9 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Typical Application VOUT+ To primary R2 AP4313 VCC R4 1.210V R3 VOUT IL C1 + + VCTRL Load C3 GND R5 ICTRL VSENSE R1 R6 500 VOUTRss VOUT = VREF × R1 + R 2 − ( I L × RSS ) R1 CurrentLimit = (V) VSENSE × VREF (VSENSE + VREF )× RSS (A) Figure 12. Typical Application 3 of AP4313 Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 10 Data Sheet CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 Mechanical Dimensions SOT-23-6 Unit: mm(inch) 0° 2.820(0.111) 8° 3.020(0.119) 0.300(0.012) 0.400(0.016) 5 0.300(0.012) 0.600(0.024) 4 1.500(0.059) 1.700(0.067) 2.650(0.104) 2.950(0.116) 6 0.200(0.008) Pin 1 Dot by Marking 1 2 3 0.700(0.028)REF 0.950(0.037)TYP 0.000(0.000) 0.100(0.004) 1.800(0.071) 2.000(0.079) 0.100(0.004) 0.200(0.008) 1.050(0.041) 1.050(0.041) 1.150(0.045) 1.250(0.049) Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 11 http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. 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