Description
The GM431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. Output voltage can be adjusted to any value between 2.5V (Vref)  and 36V by using two external resistors. The GM431 has a typical dynamic output impedance of 0.2W. Active output
circuitry provides a very unique turn on characteristic, making the GM431 an excellent replacement for zener diodes in many applications such as onboard regulation and adjustable power supplies. The GM431 is an ideal voltage reference for 3.0 to 3.3V switching power supplies.

FEATUREs
Sink Current Capability 1 mA to 100mA
Low dynamic output impedance, 0.2Wtyp.
Low output noise
0.5%, 1% or 2% reference voltage tolerance
Alternate for TL431, TL431, LM431 & AS431
Temperature range 0°C to+ 70 °C
Available in SOT -23, TO-92, SOT-89 and SOP- 8 packages

APPLICATION
Switching power supplies
Linear regulators
Adjustable supplies
Battery-operated computers
Computer disk drives
Instrumentation