Diodes Incorporated
SO 8

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Dual Op Amp and Voltage Reference

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The AP4310E 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 noninverting 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.

The AP4310E has more stringent reference voltage tolerance and offset. The AP4310E is available in the standard SO-8 package.


  • OP Amp
    • Input Offset Voltage: 0.5mV
    • Supply Current: 75mA per OP Amp at 5.0V Supply Voltage
    • Unity Gain Bandwidth:1MHz
    • Output Voltage Swing: 0 to VCC-1.5V
    • Power Supply Range: 3 to 36V
  • Voltage Reference
    • Fixed Output Voltage Reference: 2.5V
    • Reference Voltage Tolerance: ±0.4%
    • Sink Current Capability: 0.05 to 80mA
    • Typical Output Impedance: 0.2Ω
  • Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Battery chargers
  • Switching power supplies

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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Technical Documents

Recommended Soldering Techniques


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-2527 2021-06-09 2021-09-09 Additional Wafer Source (GFAB, JKFAB), New Bill of Materials (BOM) with PdCu Bond Wire, and Additional Assembly/Test
(A/T) Site (CAT)