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| CM431L Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR | |||
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CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
GENERAL DESCRIPTION
FEATURES
The CM431L is a low voltage three terminal adjustable shunt
regulator with thermal stability guaranteed over temperature.
The output voltage can be adjusted to any value from 1.24V
ï¼VREFï¼to 20V with two external resistors. The CM431L has a
typical dynamic output impedance of 0.25Ω. Active output
circuitry provides a very sharp turn on characteristic, making
the CM431L an excellent replacement for zener diodes.
 LOW voltage operationï¼1.24Vï¼
 Adjustable output voltage V0 = VREF to 20V
 Wide operating current range 60μA to 100mA
 LOW dynamic output impedance 0.25Ω typ.
 Trimmed bandgap design ± 0.5%
APPLICATIONS
The CM431L shunt regulator is available in four voltage
tolerancesï¼0.5%, 0.7%, 1.0% and 2.0%ï¼and four package
options (SOT-23-3, SOT-23-5, SOT-89, TO-92, and SOP-8).
Four voltage tolerances allow the designer the opportunity to
select the proper cost/tolerance for their application.
 Linear Regulators
 Adjustable Supplies
 Switching Power Supplies
 Battery Operated Computers
 Instrumentation
 Computer Disk Drivers
PIN CONFIGURATION
TO-92
Front View
SOT-23-3
Top View
3
12 3
SOT-23-5
Top View
5
4
12 3
1
2
Pin 1
Pin 2
Pin 3
CM431LXCM233
REF
CATHODE
ANODE
CM431LXCM2R3
CATHODE
REF
ANODE
Suffix âXâ: Grade âAâ, âBâ, âCâ, or âDâ
SOT-89
Top View
SOP-8
Top View
12 3
1
CATHODE REF
8
2
NC
NC
7
3
NC
ANODE
6
4
NC
NC
5
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 1
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