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Semtech Corporation - ADJUSTABLE SHUNT REGULATOR

Numéro de référence SC431
Description ADJUSTABLE SHUNT REGULATOR
Fabricant Semtech Corporation 
Logo Semtech Corporation 





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SC431 fiche technique
ADJUSTABLE SHUNT REGULATOR
SC431
April 13, 1998
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC431 is a three terminal adjustable shunt regula-
tor with thermal stability guaranteed over temperature.
The output voltage can be adjusted to any value from
2.5V (VREF) to 36V with two external resistors. The
SC431 has a typical dynamic output impedance of
0.25. Active output circuitry provides a very sharp
turn on characteristic, making the SC431 an excellent
replacement for zener diodes.
The SC431 shunt regulator is available in three voltage
tolerances (0.5%, 1.0% and 2.0%) and three package
options (SOT-23-3, SO-8 and TO-92). The three volt-
age tolerances allow the designer the opportunity to
select the proper cost/tolerance for their application.
FEATURES
Wide operating current range 100µA to 150mA
Low dynamic output impedance 0.25 typ.
Trimmed bandgap design + 0.5%
Alternate for TL431, LM431 & AS431
APPLICATIONS
Linear Regulators
Adjustable Supplies
Switching Power Supplies
Battery Operated Computers
Instrumentation
Computer Disk Drives
PIN CONFIGURATIONS
SOT-23 -3 Lead (Top View)
BLOCK DIAGRAM
SOIC 8 Lead (Top View)
TO-92 (Top View)
SYMBOL DIAGRAM
© 1998 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320

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