DUAL OPAMP AND VOLTAGE REFERENCE AP4301
1



March, 2003
Advanced Analog Circuits Data Sheet
Rev.1.0
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 corre-
sponding reduction in system complexity and cost.
Features
· Input offset voltage: 0.5mV
· Supply current: 250µA per Op-Amp at 5.0V sup-
ply voltage
· Unity gain bandwidth: 1MHz
· Output voltage swing: 0 to (V
CC
- 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
SOIC-8 DIP-8
Figure 1. Package Types of AP4301