LM431SA_06 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Programmable Shunt Regulator

LM431SA/LM431SB/LM431SC
Programmable Shunt Regulator
July 2006
tm
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 LM431SA/LM431SB/LM431SC are three terminal
output adjustable regulators with thermal stability over
operating temperature range. The output voltage can be set
any value between VREF (approximately 2.5 volts) and 36
volts with two external resistors. These devices have a
typical dynamic output impedance of 0.2Ω Active output
circuit provides a sharp turn-on characteristic, making these
devices excellent replacement for Zener Diodes in many
applications.
SOT-89
1
1. Ref 2. Anode 3. Cathode
SOT-23F
3
12
1. Cathode 2. Ref 3. Anode
Internal Block Diagram
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©2006 Fairchild Semiconductor Corporation
Rev. 1.0.5