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SC431CZ-5 Datasheet

  • SC431CZ-5

  • ADJUSTABLE SHUNT REGULATOR

  • 6頁

  • SEMTECH   SEMTECH

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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 (V
REF
) to 36V with two external resistors. The
SC431 has a typical dynamic output impedance of
0.25鈩? 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
鈥?/div>
Wide operating current range 100碌A to 150mA
鈥?/div>
Low dynamic output impedance 0.25
鈩?/div>
typ.
鈥?/div>
Trimmed bandgap design + 0.5%
鈥?/div>
Alternate for TL431, LM431 & AS431
APPLICATIONS
鈥?/div>
Linear Regulators
鈥?/div>
Adjustable Supplies
鈥?/div>
Switching Power Supplies
鈥?/div>
Battery Operated Computers
鈥?/div>
Instrumentation
鈥?/div>
Computer Disk Drives
PIN CONFIGURATIONS
SOT-23 -3 Lead (Top View)
BLOCK DIAGRAM
SOIC 8 Lead (Top View)
SYMBOL DIAGRAM
TO-92 (Top View)
1
漏 1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320

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