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Copyright

© 2006 ADDtek Corp.

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DD021_G

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JUNE 2006

AMC431

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DESCRIPTION

FEATURES

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

and 36V by using two external resistors. The AMC431

offers low output impedance for improved load regulation

with a typical output impedance of 200m

Ω. 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.

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

200m

Ω;

Adjustable output voltage from VREF to 36V

Available in 3L-TO92 and surface mount SOT89,

SOT23.

Low output noise

Typical equivalent full range temperature

coefficient of 30ppm/°C

Pin assignment identical to earlier TL431 series.

APPLICATIONS

PACKAGE PIN OUT

3-Pin Plastic TO-92

(Top View)

Voltage Reference

Precision shunt regulator

High current shunt regulator

PWM down converter with

reference

Voltage monitor

ORDER INFORMATION

TO-92

SOT-89

SOT-23

SOT-23

Initial

Tolerance

LP

3-pin

PK

3-pin

DB

3-pin

DB

3-pin

1.5%

AMC431CLP

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1.5%

AMC431CLPF(Lead Free) --

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1%

AMC431LP

AMC431PK

AMC431DB

AMC431RDB

1%

AMC431LPF(Lead Free)

AMC431PKF(Lead Free)

AMC431DBF(Lead Free)

AMC431RDBF(Lead Free)

0.5%

AMC431BLP

AMC431BPK

AMC431BDB

AMC431BRDB

0 to 70

0.5%

AMC431BLPF(Lead Free) AMC431BPKF(Lead Free) AMC431BDBF(Lead Free)

AMC431BRDBF(Lead Free)

Note: 1. For AMC431RDB and AMC431BRDB.

2. For AMC431DB and AMC431BDB.

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.

6. The letter “F” is marked for Lead Free process.

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3-Pin Plastic SOT-23

Surface Mount

(Top View)

(Note 2)

3-Pin Plastic SOT-23

Surface Mount

(Top View

3-Pin Plastic SOT-89

Surface Mount

(Top View)

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