Diodes Incorporated
SO 8

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Dual Op Amp and Voltage Reference

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The AP4310/A is a monolithic IC specifically designed to regulate the output current and voltage levels of switching battery chargers and power supplies. The device contains two Op Amps and a 2.5V precision shunt voltage reference. Op Amp 1 is designed for voltage control with its non-inverting input internally connected to the output of the shunt regulator. Op Amp 2 is for current control with both inputs uncommitted. The IC offers the power converter designer a control solution that features increased precision with a corresponding reduction in system complexity and cost. AP4310A has more strigent reference voltage tolerance than AP4310.


  • Op Amp
    • Input Offset Voltage: 0.5mV
    • upply Current: 75μA per Op Amp at 5.0V Supply Voltage
    • Unity Gain Bandwidth: 1MHz · Output Voltage Swing: 0 to (VCC -1.5)V
    • Power Supply Range: 3 to 36V
  • Voltage Reference
    • Fixed Output Voltage Reference: 2.5V
    • Reference Voltage Tolerance AP4310A: ± 0.4%, AP4310: ± 1%
    • Sink Current Capability: 0.05 to 80mA
    • Typical Output Impedance: 0.2Ω


  • Battery Charger
  • Switching Power Supply

Product Specifications

Product Parameters

Constant VoltageReference Tolerance (%) ±0.4 %
ReferenceVoltage (V) 2.5 V
VCC Maximum Rating 40
SupplyCurrent (mA) 0.2 mA

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2651 2023-11-13 2023-11-13 Qualified Additional Fab Source, Assembly Test Sites, Die Revision, BOM, Datasheet, Tape and Reel Packing Quantity.
PCN-2514 2021-03-09 2021-06-09 Additional Wafer Source JKFAB