AN431AN-BTRG1 Datasheet, PDF (1/14 Pages) BCD Semiconductor Manufacturing Limited – ADJUSTABLE PRECISION SHUNT REGULATORS

Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
General Description
Features
AN431-B
The AN431-B is a three-terminal adjustable shunt reg-
ulator with guaranteed thermal stability over a full
operation range. It features sharp turn-on characteris-
tics, low temperature coefficient and low output imped-
ance, which make it ideal substitute for Zener diode in
applications such as switching power supply, charger
and other adjustable regulators.
The output voltage of AN431-B can be set to any value
between V_REF (2.5V) and the corresponding maximum
cathode voltage.
The AN431-B precision reference is offered in two
voltage tolerance: 0.5% and 1.0%.
This IC is available in SOT-23 package.
· Programmable Precise Output Voltage from 2.5V
to 18V
· High Stability under Capacitive Load
· Low Temperature Deviation: 4.5mV Typical
· Low Equivalent Full-range Temperature Coeffi-
cient with 20PPM/^oC Typical
· Sink Current Capacity from 1mA to 100mA
· Low Output Noise
· Wide Operating Range of -40 to 125^oC
Applications
· Charger
· Voltage Adapter
· Switching Power Supply
· Graphic Card
· Precision Voltage Reference
SOT-23
Figure 1. Package Type of AN431-B
Jan. 2011 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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