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AMS2905

500mA LOW DROPOUT VOLTAGE REGULATOR

Advanced Monolithic Systems Inc 

Advanced

Monolithic

Systems

FEATURES

• Three Terminal Adjustable or Fixed Voltages*

1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V

• Output Current of 500mA

• Operates Down to 1V Dropout

• Line Regulation: 0.2% Max.

• Load Regulation: 0.4% Max.

• TO-252, SOT-223 and SOT-89 packages

AMS2905

500mA LOW DROPOUT VOLTAGE REGULATOR

RoHS compliant

APPLICATIONS

• High Efficiency Linear Regulators

• Post Regulators for Switching Supplies

• 5V to 3.3V Linear Regulator

• Battery Chargers

• Sound Cards

• Power Management for Notebook

• Battery Powered Instrumentation

GENERAL DESCRIPTION

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:

SOT-89

PACKAGE TYPE

TO-252

SOT-223

AMS2905CL

AMS2905CD

AMS2905

AMS2905CL-1.5 AMS2905CD-1.5 AMS2905-1.5

AMS2905CL-1.8 AMS2905CD-1.8 AMS2905-1.8

AMS2905CL-2.5 AMS2905CD-2.5 AMS2905-2.5

AMS2905CL-2.85 AMS2905CD-2.85 AMS2905-2.85

AMS2905CL-3.3 AMS2905CD-3.3 AMS2905-3.3

AMS2905CL-5.0 AMS2905CD-5.0 AMS2905-5.0

*For additional available fixed voltages contact factory.

PIN CONNECTIONS

FIXED VERSION

1- VIN

2- Ground

3- VOUT

ADJUSTABLE VERSION

1- VIN

2- Adjust

3- VOUT

OPERATING JUNCTION

TEMPERATURE

RANGE

-40 to 125° C

-40 to 125° C

-40 to 125° C

-40 to 125° C

-40 to 125° C

-40 to 125° C

-40 to 125° C

SOT-223 Top View

SOT-89 Top View

1

2

3

TO-252 Front View

3

2

1

1

2

3

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

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