DUAL OP AMP AND VOLTAGE REFERENCE AP4300

Data Sheet
1
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
General Description
The AP4300 is a monolithic IC specifically designed
to regulate the output current and voltage levels of
switching battery chargers and power supplies.
The device contains two operational amplifiers and a
precision shunt regulator. Op Amp 1 is designed for
voltage control, whose non-inverting input internally
connects to the output of the shunt regulator. Op Amp
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.
The AP4300 is available in standard packages of DIP-
8 and SOIC-8.
Features
Op Amp
·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
Voltage Reference
·Fixed Output Voltage Reference: 2.5V, 2.6V
·Voltage Tolerance: 0.5%, 1%
·Sink Current Capability from 0.1 to 80mA
Applications
·Battery Charger
·Switching Power Supply
Figure 1. Package Types of AP4300
SOIC-8 DIP-8