AP4313 外置恒流调压电路.pdf

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 1Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedData SheetGeneral DescriptionThe AP4313 is a highly integrated solution for a con-stant voltage/constant current mode SMPS application.The AP4313 contains one 1.21V voltage referencewith ±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 Control· Precision Internal Voltage Reference· Few External Components · Easy Compensation· Low Supply Current: 0.5mA· Operating Temperature Range: -40 to 105oCApplications· Adapters· Battery Chargers Figure 1. Package Type of AP4313SOT-23-6 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 2Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedData SheetFigure 2. Pin Configuration of AP4313 (Top View)Pin DescriptionPin Number Pin Name Function1 VCTRL Input pin of the voltage control loop2 GND Ground3 VOUT Output pin. Sinking current only4 ICTRL Input pin of the current control loop5 VSENSE Input pin of the current control loop6 VCC Power supplyPin Configuration (SOT-23-6) K PackageVCTRLGNDVOUT VCCVSENSEICTRL213 456 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313 3Apr. 2007 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedData SheetFunctional Block DiagramFigure 3. Functional Block Diagram of AP4313Package Temperature Range Part Number Marking ID Packing TypeTin Lead Lead Free Tin Lead Lead FreeSOT-23-6 -40 to 105oC AP4313KTR AP4313KTR-E1 K6G E6G Tape ReelCircuit TypePackageK: SOT-23-6 E1: Lead FreeBlank: Tin Lead AP4313 - TR: Tape and ReelOrdering Inform