FAN431 Datasheet, PDF (1/10 Pages) Fairchild Semiconductor – Programmable Shunt Regulator

FAN431/FAN431A/FAN431L
Programmable Shunt Regulator
www.fairchildsemi.com
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 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 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.
TO-92
1
1. Ref 2. Anode 3. Cathode
Internal Block Diagram
REFERENCE
2.5 Vref
REFERENCE (R)
ANODE
CATHODE (K)
ANODE(A)
©2003 Fairchild Semiconductor Corporation
CATHODE
Rev. 1.0.1