DUAL OP AMP AND VOLTAGE REFERENCE AP4310
Preliminary Datasheet
1
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
General Description
The AP4310 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 Op Amps and a 2.5V preci-
sion shunt voltage reference. Op Amp 1 is designed for
voltage control with its 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 AP4310 is available in standard packages of DIP-
8 and SOIC-8.
Features
Op Amp
·Input Offset Voltage: 0.5mV
·Supply Current: 75µA 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 36V
Voltage Reference
·Fixed Output Voltage Reference: 2.5V
·Voltage Tolerance: ± 0.4%, ± 1%
·Sink Current Capability: 0.05 to 80mA
·Typical Output Impedance: 0.2Ω
Applications
·Battery Charger
·Switching Power Supply
Figure 1. Package Types of AP4310
SOIC-8 DIP-8