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© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Device Number Rev. 1.0.2
FAN431/FAN431A/FAN431L
Programmable Shunt Regulator
Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.20 Typical
Description
The FAN431/FAN431A/FAN431L are three terminal
output adjustable regulators with thermal stability over
operating temperature range. The output voltage can be
set any value between V
REF (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
May 2007
• Sink Current Capability of 1.0 to 100mA
• Equivalent Full-Range Temperature Coefficient of
• Temperature Compensated for Operation Over
50ppm/°C Typical
• Low Output Noise Voltage
• Fast Turn-on Response
1
Full Rated Operating Temperature Range
