Monday, November 8, 2010

The Features and Description of TL431/TL431A Programmable Shunt Regulator

The Features and Description of IC electronic components TL431/TL431A Series.
Features
Programmable Output Voltage to 36 Volts
Low Dynamic Output Impedance 0.20 Typical
Sink Current Capability of 1.0 to 100mA
Equivalent Full-Range Temperature Coefficient of
50ppm/°C Typical
Temperature Compensated For Operation Over Full Rated
Operating Temperature Range
Low Output Noise Voltage
Fast Turn-on Response

Description
The TL431/TL431Aare three-terminal adjustable regulator
series with a guaranteed thermal stability over applicable
temperature ranges. The output voltage may be set to any
value between VREF (approximately 2.5 volts) and 36 volts
with two external resistors These devices have a typical
dynamic output impedance of 0.2W Active output circuitry
provides a very sharp turn-on characteristic, making these
devices excel lent replacement for zener diodes in many
applications.

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