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