Advanced

AMS317

Monolithic

1A LOW DROPOUT VOLTAGE REGULATOR

Systems

RoHS compliant

FEATURES

APPLICATIONS

• Three Terminal Adjustable or Fixed Voltages*

• High Efficiency Linear Regulators

1.8V, 2.5V, 2.85V, 3.3V and 5.0V

• Post Regulators for Switching Supplies

• Output Current of 1A

• 5V to 3.3V Linear Regulator

• Operates Down to 1V Dropout

• Battery Chargers

• Line Regulation: 0.2% Max.

• Active SCSI Terminators

• Load Regulation: 0.4% Max.

• Power Management for Notebook

•TO-220, TO-263, TO-252 and SOT-223 package available

• Battery Powered Instrumentation

GENERAL DESCRIPTION

The AMS317 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down

to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output current,

decreasing at lower load currents.

On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload

conditions on both the regulator and power source circuitry.

The AMS317 devices are pin compatible with other three-terminal regulators and are offered in 3 lead TO-220 package, in the

2 & 3 Lead TO-263 (Plastic DD), in the TO-252 (D PAK) and in the low profile surface mount SOT-223 package.

ORDERING INFORMATION:

OUTPUT

PACKAGE TYPE

OPERATING JUNCTION

VOLTAGE

3 Lead TO-220

2 &3 Lead TO-263

TO-252

SOT-223

TEMPERATURE RANGE

ADJUSTABLE

AMS317ACT

AMS317ACM

AMS317ACD

AMS317A

-40 to +125

° C

AMS317CT

AMS317CM

AMS317CD

AMS317

0 to 125

° C

FIXED*

AMS317ACT-X

AMS317ACM-X

AMS317ACD-X

AMS317A-X

-40 to +125

° C

AMS317CT-X

AMS317CM-X

AMS317CD-X

AMS317-X

0 to 125

° C

X= 1.8V, 2.5V, 2.85V, 3.3V and 5.0V.

*For additional available fixed voltages contact factory.

SOT-223 Top View

1

2

3

TAB IS

OUTPUT

TO-252 FRONT VIEW

1

2

3

PIN CONNECTIONS

1

2

3

TAB IS

OUTPUT

TO-263 FRONT VIEW

1

2

3

TAB IS

OUTPUT

2L TO-263 FRONT VIEW

FIXED VERSION

ADJUSTABLE VERSION

1- Ground

1- Adjust

1

2

3

TAB IS

OUTPUT

TO-220 FRONT VIEW

Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722

Fax (925) 443-0723