Advanced Monolithic Systems, Inc.

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

Advanced

AMS2905

Monolithic

500mA LOW DROPOUT VOLTAGE REGULATOR

Systems

FEATURES

APPLICATIONS

•• Three Terminal Adjustable or Fixed Voltages*

•• High Efficiency Linear Regulators

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

•• Post Regulators for Switching Supplies

•• Output Current of 500mA

•• 5V to 3.3V Linear Regulator

•• Operates Down to 1V Dropout

•• Battery Chargers

•• Line Regulation: 0.2% Max.

•• Sound Cards

•• Load Regulation: 0.4% Max.

•• Power Management for Notebook

•• TO-252, SOT-223 and SOT-89 packages

•• Battery Powered Instrumentation

GENERAL DESCRIPTION

The

The AMS2905 series of adjustable and fixed voltage regulators are designed to provide 500mA 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 AMS2905 devices are pin compatible with other three-terminal regulators and are offered in the low profile surface

mount TO-252(DPAK), SOT-223 and SOT-89 packages.

ORDERING INFORMATION:

PACKAGE TYPE

OPERATING JUNCTION

SOT-89

TO-252

SOT-223

TEMPERATURE

RANGE

AMS2905CL

AMS2905CD

AMS2905

0 to 125

° C

AMS2905CL-1.5

AMS2905CD-1.5

AMS2905-1.5

0 to 125

° C

AMS2905CL-2.5

AMS2905CD-2.5

AMS2905-2.5

0 to 125

° C

AMS2905CL-2.85

AMS2905CD-2.85

AMS2905-2.85

0 to 125

° C

AMS2905CL-3.3

AMS2905CD-3.3

AMS2905-3.3

0 to 125

° C

AMS2905CL-5.0

AMS2905CD-5.0

AMS2905-5.0

0 to 125

° C

*For additional available fixed voltages contact factory.

PIN CONNECTIONS

FIXED VERSION

ADJUSTABLE VERSION

2- Ground

2- Adjust

SOT-89 Top View

3

2

1

SOT-223 Top View

1

2

3

TO-252 Front View

1

2

3