AP4301 查看數據表（PDF） - BCD Semiconductor

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AP4301

DUAL OPAMP AND VOLTAGE REFERENCE

BCD Semiconductor 

Advanced Analog Circuits

DUAL OPAMP AND VOLTAGE REFERENCE

General Description

Features

Data Sheet

AP4301

The AP4301 is a monolithic IC specifically designed · Input offset voltage: 0.5mV

to control the output current and voltage levels of · Supply current: 250µA per Op-Amp at 5.0V sup-

switch mode battery chargers and power supplies.

ply voltage

· Unity gain bandwidth: 1MHz

The device contains two operational amplifiers and a

precision shunt regulator. OPAMP 1 is designed for

·

Output voltage swing: 0 to (VCC - 1.5)V

voltage control, whose non-inverting input internally · Power supply range: 3 to 18V

connects to the ouput of the shunt regulator. OPAMP 2 · Fixed output voltage reference: 1.25V, 1.24V

is for current control with both inputs uncommitted. · Voltage tolerance: 0.5%, 1%

The IC offers the power converter designer a control · Sink current capability from 0.1 to 80mA

solution that features increased precision with a corre- · Package types: DIP-8 and SOIC-8

sponding reduction in system complexity and cost.

Applications

· Battery charger

· Switch mode power supply

March, 2003

SOIC-8

DIP-8

Figure 1. Package Types of AP4301

1

Rev.1.0

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