AP4301

Advanced Analog Circuits Data Sheet AP4301 DUAL OPAMP AND VOLTAGE REFERENCE General Description The AP4301 is a monolithic IC specifically designed to control the output current and voltage levels of switch mode battery chargers and power supplies. The device contains two operational amplifiers and a precision shunt regulator. OPAMP 1 is designed for voltage control, whose non-inverting input internally connects to the ouput of the shunt regulator. OPAMP 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. Features · · · · · · · · · 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 Fixed output voltage reference: 1.25V, 1.24V Voltage tolerance: 0.5%, 1% Sink current capability from 0.1 to 80mA Package types: DIP-8 and SOIC-8 Applications · · Battery charger Switch mode power supply www.DataSheet4U.com SOIC-8 DIP-8 Figure 1. Package Types of AP4301 March, 2003 1 Rev.1.0 Advanced Analog Circuits Data Sheet AP4301 DUAL OPAMP AND VOLTAGE REFERENCE Pin Configuration OUTPUT 1 INPUT 1INPUT 1+ / VKA GND 1 2 3 4 Top View 8 7 6 5 VCC OUTPUT 2 INPUT 2INPUT 2+ Figure 2. Pin configuration of AP4301 Functional Block Diagram OUTPUT 1 1 2 + 8 VCC 7 6 OUTPUT 2 INPUT 1 3 + INPUT 2 ...