AP4313外置恒流调压电路

AP4313 1Apr. 2007 Rev. 1. 5BCD 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.Featu res·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 AP4313 2Apr. 2007 Rev. 1. 5BCD Semiconductor Manufacturing LimitedData SheetFigure 2. Pin Configuration of AP4313 (Top View )Pin DescriptionPin Nu mberPin NameFu nction1VCTRLInput pin of the voltage control loop2GNDGround3VOUTOutput pin. Sinking current only4ICTRL Input pin of the current control loop5VSENSEInput pin of the current control loop6VCC Power supplyPin Configu ration(SOT-23-6) K PackageVCTRLGNDVOUTVCCVSENSEICTRL213456 AP4313 3Apr. 2007 Rev. 1. 5BCD Semiconductor Manufacturing LimitedData SheetFu nctional Block DiagramFigu re 3. Fu nctional Block Diagram of AP4313PackageTemperature RangePart Number Marking IDPacking TypeTin LeadLead FreeTin LeadLead FreeSOT-23-6-40 to 105oCAP4313KTRAP4313KTR-E1K6GE6GTape & ReelCircuit TypePackageK: SOT-23-6E1: Lead FreeBlank: Tin Lead AP4313 - TR: Tape and ReelOrdering Informa...