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AMS317-18

1A LOW DROPOUT VOLTAGE REGULATOR

Advanced Monolithic Systems Inc 

Advanced

Monolithic

Systems

AMS317

1A LOW DROPOUT VOLTAGE REGULATOR

FEATURES

• Three Terminal Adjustable or Fixed Voltages*

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

• Output Current of 1A

• Operates Down to 1V Dropout

• Line Regulation: 0.2% Max.

• Load Regulation: 0.4% Max.

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

APPLICATIONS

• High Efficiency Linear Regulators

• Post Regulators for Switching Supplies

• 5V to 3.3V Linear Regulator

• Battery Chargers

• Active SCSI Terminators

• Power Management for Notebook

• Battery Powered Instrumentation

GENERAL DESCRIPTION

TThhee 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

VOLTAGE 3 Lead TO-220 2 &3 Lead TO-263

TO-252

ADJUSTABLE AMS317ACT

AMS317ACM

AMS317CT

AMS317CM

FIXED*

AMS317ACT-X AMS317ACM-X

AMS317CT-X AMS317CM-X

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

*For additional available fixed voltages contact factory.

AMS317ACD

AMS317CD

AMS317ACD-X

AMS317CD-X

SOT-223

AMS317A

AMS317

AMS317A-X

AMS317-X

PIN CONNECTIONS

SOT-223 Top View

FIXED VERSION

ADJUSTABLE VERSION

1- Ground

2- VOUT

3- VIN

1- Adjust

2- VOUT

3- VIN

TO-220 FRONT VIEW

3

TAB IS

OUTPUT

2

1

1

2

3

TO-252 FRONT VIEW

TAB IS

3

OUTPUT

2

1

OPERATING JUNCTION

TEMPERATURE RANGE

-40 to +125° C

0 to 125° C

-40 to +125° C

0 to 125° C

TO-263 FRONT VIEW

3

TAB IS

OUTPUT

2

1

2L TO-263 FRONT VIEW

3

TAB IS

OUTPUT

2

1

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

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