AP4306 Datasheet, PDF (1/12 Pages) BCD Semiconductor Manufacturing Limited – CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER

Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4306
General Description
Features
The AP4306 is a highly integrated solution for a con- _{· Constant Voltage and Constant Current Control}
stant voltage/constant current mode SMPS application. _{· Precision Internal Voltage Reference}
· Low External Component Count
The AP4306 contains one 1.21V voltage reference, _{· Easy Compensation}
one low voltage reference used in current sensing cir-
cuit and two operational amplifiers. The 1.21V voltage
reference, combined with one operational amplifier,
·
·
Low Supply Current: 0.5mA
Current Control Loop Reference
makes of an ideal voltage controller for use in adapters
A Version: 70mV
and battery chargers. The low voltage reference, com-
B Version: 100mV
bined with another operational amplifier, makes of an
C Version: 150mV
ideal current limiter for output low side current sens- _{· Operating Temperature Range: -40 to 105}o_C
ing.
· Operating Supply Voltage: 2.5V to 18V
The AP4306 is fully compatible with AP4305 in
functionality and electrical characteristics except its
lower reference voltage for current control loop, thus
higher power efficiency in SMPS applications such as
low power charger can be realized with AP4306
compared to AP4305.
Applications
· Adapters
· Battery Chargers
The AP4306 is available in SOT-23-6 package.
Sep. 2011 Rev. 1. 4
SOT-23-6
Figure 1. Package Type of AP4306
BCD Semiconductor Manufacturing Limited
1