DESCRIPSION
The TL431 is a three-terminal adjustable shunt regulator with specified thermal stability over applicable temperature VREF(Approx. 2.5V) and 40V with two external resistors. This device has a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making this device excellent replacement for zener diodes in many applications. The TL431 is characterized for operation from -40℃to +125℃.

FEATURES
Programmable Output Voltage to 40V
Guaranteed 0.5% Reference Voltage Tolerance
Low (0.2Ω Typ.) Dynamic Output Impedance
Cathode Current Range(Continuous) – 100 ~ 150 mA
Equivalent Full Range Temperature Coefficient of 50PPM/℃
Temperature Compensated For Operation Over Full Rate Operating Temperature Range
Low Output Noise Voltage
Fast Turn-on Response
TO-92, SOT-89 or SOT-23 3L Package

APPLICATION
Shunt Regulator
Precision High-Current Series Regulator
High-Current Shunt Regulator
Crowbar Circuit
PWM Converter With Reference
Voltage Monitor
Precision Current Limiter