AMC431 Datasheet, PDF (1/11 Pages) List of Unclassifed Manufacturers – PRECISION ADJUSTABLE SHUNT VOLTAGE REFERENCE

AMC DOC. #: AMC431_C
November 2002
A
DD MICROTECH CORP.
DESCRIPTION
The AMC431 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
V_REF and 36V by using two external resistors. The
AMC431 offers low output impedance for improved
load regulation with a typical output impedance of
200mΩ. Because of the active output circuitry, the
AMC431can 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.
AMC431
PRECISION ADJUSTABLE SHUNT
VOLTAGE REFERENCE
FEATURES
! Initial voltage reference accuracy of
0.5%, 1.0%, and 1.5%
! Sink current capability from 1mA to
100mA
! Typical output dynamic impedance less
than 200mΩ;
# Adjustable output voltage from V_REF to 36V
# Available in 3L-TO92 and surface mount
SOT89, SOT23 and 8 pin S.O.I.C. packages
# Low output noise
# Typical equivalent full range temperature
coefficient of 30ppm/°C
# Pin assignment identical to earlier TL431
series.
APPLICATIONS
! Voltage Reference
! Precision shunt regulator
! High current shunt regulator
! PWM down converter with
reference
! Voltage monitor
PACKAGE PIN OUT
CATHODE
ANODE
VREF
CATHODE
ANODE
ANODE
NC
VREF
ANODE
ANODE
NC
3-Pin Plastic TO-92
(Top View)
8-Pin Plastic S.O.I.C.
Surface Mount
(Top View)
CATHODE
ANODE
VREF
3-Pin Plastic SOT-89
Surface Mount
(Top View)
ANODE
VREF
ANODE
CATHODE
CATHODE
VREF
(Note 1)
3-Pin Plastic SOT-23
Surface Mount
(Top View)
(Note 2)
3-Pin Plastic SOT-23
Surface Mount
(Top View)
ORDER INFORMATION
T_A (°C)
Initial
Tolerance
DM ^SOIC
8-pin
LP ^TO-92
3-pin
PK ^SOT-89 DB ^SOT-23
3-pin
3-pin
DB ^SOT-23
3-pin
1.5%
--
AMC431CLP
--
--
--
0 to 70 1% AMC431DM
AMC431LP
AMC431PK
AMC431DB AMC431RDB
0.5%
--
AMC431BLP AMC431BPK AMC431BDB AMC431BRDB
Note: 1. For AMC431DB and AMC431BDB.
2. For AMC431RDB and AMC431BRDB.
3. For surface-mount and TO-92 packages in Tape & Reel, add suffix “T” (e.g., AMC431LPT,
AMC431DBT).
4. For TO-92 in Tape & Box (without reel), add suffix “TB” (e.g., AMC431LPTB).
5. DB package is only available in Tape & Reel.
Copyright  2002, ADD Microtech Corp.
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