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DATA SHEET www.onsemi.com
Programmable Shunt Regulator
LM431SA, LM431SB, LM431SC
Description The LM431SA / LM431SB / LM431SC are three-terminal the
output adjustable regulators with thermal stability over operating temperature range. The output voltage can be set any value between VREF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 W. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications.
Features
• Programmable Output Voltage to 36 V • Low Dynamic Output Impedance: 0.2 W (Typical) • Sink Current Capability: 1.