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| GM431_08 Datasheet, PDF (1/11 Pages) Gamma Microelectronics Inc. – 2.5V ADJUSTABLE SHUNT REGULATOR | |||
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GM431
2.5V ADJUSTABLE
SHUNT REGULATOR
Description
The GM431is a three terminal adjustable shunt
regulator with thermal stability guaranteed over
temperature. The output voltage can be adjusted
to any value between 2.5V (VREF) and 18V by
using two external resistors. The GM431 has a
typical dynamic output impedance of 0.2 . Active
output circuitry provides a very unique turn on
characteristic, making the GM431an excellent
replacement for zener diodes in many
applications such as on board regulation and
adjustable power supplies. The GM431 is an
ideal voltage reference for 3.0 to 3.3V switching
power supplies.
The GM431 shunt regulator is available with 3
voltage tolerances 0.5%, 1.0% and 2.0% over
full temperature range and four package options
(SOT-23, TO-92, SOT-89 and SO-8).
Features
 Sink Current Capability 1mA to 100mA
 Low dynamic out put impedance, 0.2
typ.
 Low output noise
 0.5%, 1% or 2% reference voltage
tolerance
 Alternate for TL431, LM431 & AS431
 Temperature range -40°C to + 125°C
 Available in SOT-23, TO-92, SOT-89 and
Sop- 8 packages
Application
Switching power supplies
Linear regulator
Adjustable supplies
Battery-operated computers
Computer disk drives
Instrumentation
Logic Symbol
Reference
Anode
Cathode
Block Diagram
Cathode
Reference
VREF
Anode
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