Advanced Monolithic Systems, Inc.

6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

Advanced

AMS1085

Monolithic

3A LOW DROPOUT VOLTAGE REGULATOR

Systems

FEATURES

APPLICATIONS

•• Three Terminal Adjustable or Fixed Voltages

•• High Efficiency Linear Regulators

1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V

•• Post Regulators for Switching Supplies

•• Output Current of 3A

•• Microprocessor Supply

•• Operates Down to 1V Dropout

•• Battery Chargers

•• Load Regulation: 0.1%

•• Constant Current Regulators

•• Line Regulation: 0.015%

•• Notebook/Personal Computer Supplies

•• TO-220, TO-263 and TO-252 packages available

•• Portable Instrumentation

GENERAL DESCRIPTION

The

The AMS1085 series of adjustable and fixed voltage regulators are designed to provide 3A output current and to operate

down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V 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 AMS1085 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3

and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.

ORDERING INFORMATION:

PACKAGE TYPE

OPERATING JUNCTION

3 LEAD TO-220

2&3 LEAD TO-263

TO-252

TEMPERATURE RANGE

AMS1085CT

AMS1085CM

AMS1085CD

0 to 125

° C

AMS1085CT-1.5

AMS1085CM-1.5

AMS1085CD-1.5

0 to 125

° C

AMS1085CT-2.5

AMS1085CM-2.5

AMS1085CD-2.5

0 to 125

° C

AMS1085CT-2.85

AMS1085CM-2.85

AMS1085CD-2.85

0 to 125

° C

AMS1085CT-3.0

AMS1085CM-3.0

AMS1085CD-3.0

0 to 125

° C

AMS1085CT-3.3

AMS1085CM-3.3

AMS1085CD-3.3

0 to 125

° C

AMS1085CT-3.5

AMS1085CM-3.5

AMS1085CD-3.5

0 to 125

° C

AMS1085CT-5.0

AMS1085CM-5.0

AMS1085CD-5.0

0 to 125

° C

PIN CONNECTIONS

FIXED VERSION

ADJUSTABLE VERSION

1- Ground

1- Adjust

TAB IS

OUTPUT

TO-252 FRONT VIEW

1

2

3

1

2

3

TAB IS

OUTPUT

2L TO-263 FRONT VIEW

1

2

3

TAB IS

OUTPUT

TO-220 FRONT VIEW

1

2

3

TAB IS

OUTPUT

3L TO-263 FRONT VIEW