General Description

The AP4303 is a monolithic IC that contains quad operational amplifiers and a precision shunt regulator, 1.25Vfor AP4303-C or 1.24V for AP4303-D respectively. It is specifically designed to regulate the output current and voltage levels of switching battery chargers and power supplies.

Features

Op Amp

• Input Offset Voltage: 0.5mV

• Supply Current: 250µA 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 18V

Voltage Reference

• Reference Voltage Tolerance: 0.5, 1

• Sink Current Capability from 0.1 to 80mA

• Output Dynamic Impedance: 0.2Ω

• Externally Adjusted Output Voltage Reference:

1.25V for AP4303-C and 1.24V for AP4303-D

Applications

• Battery Charger

• Switching Power Supply