This part is a kind of semiconductor called AP4310.
Function of this product has DUAL OP AMP AND VOLTAGE REFERENCE.
Manufacturers : BCD Semiconductor
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Data Sheet DUAL OP AMP AND VOLTAGE REFERENCE General Description The AP4310 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 connects 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 AP4310 is available in standard packages of DIP8 and SOIC-8. AP4310 Features Op Amp · Input Offset Voltage: 0.5mV · Supply Current: 75µA per Op Amp [ ... ]