CM431 Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR

GENERAL DESCRIPTION
CM431
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
FEATURES
The CM431 is a three-terminal adjustable shunt voltage regulator
with specified thermal stability and pin-to-pin compatible with the
earlier 431 series. The output voltage can be adjusted to any
value between VB_REFB and 36V by using two external resistors. The
CM431 offers low output impedance for improved load regulation
with a typical output impedance of 200mΩ. Because of the
active output circuitry, the CM431 can replace the zener diodes in
applications such as switching power supplies, OVP crowbar
circuits, references for A/D, D/A converters with improved turn-on
characteristics.
PIN CONFIGURATION
TO-92
Front View
SOT-23-3
Top View
3
‹ Initial voltage reference accuracy of 1.0%.
‹ Sink current capability from 1mA to 100mA
‹ Typical output dynamic impedance less than 200mΩ;
‹ Adjustable output voltage from VB_REFB to 36V
‹ Available in SOT-23, SOT-89, TO-92, & SOP-8
‹ Low output noise
‹ Typical equivalent full range temperature coefficient of
30ppm/
P
C O
P
APPLICATIONS
‹ Voltage Reference
‹ Precision shunt regulator
‹ High current shunt regulator
‹ PWM down converter with reference
‹ Voltage monitor
12 3
1
2
CM431XCM233 CM431XCM2R3
Pin 1 REF
CATHODE
Pin 2 CATHODE
REF
Pin 3 ANODE
ANODE
Suffix “X”: Grade “A”, “B”, “C”, or “D”
SOT-23-5
Top View
5
4
12 3
SOT-89
Top View
12 3
SOP-8
Top View
1
CATHODE ^REF
8
2
NC
NC
7
3
NC
ANODE
6
4
NC
NC
5
2006/10/11 Rev.1.4
Champion Microelectronic Corporation
Page 1