Advanced Monolithic Systems, Inc.

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

Advanced

AMS500

Monolithic

LOW COST 500mA REGULATOR

Systems

FEATURES

APPLICATIONS

•• Fixed and Adjustable Versions Available

•• Cellular Telephones

•• Output Current up to 500mA

•• Portable Consumer Equipment

•• Very Low Quiescent Current

•• Portable (Notebook) Computers

•• Reverse Battery Protection

•• Battery Powered Systems

•• Input-output Differential less than 0.6V

•• Portable Instrumentation

•• Short Circuit Protection

•• Radio Control Systems

•• Internal Thermal Overload Protection

•• CD/DVD drives

•• Overvoltage Protection

•• Automotive

•• ON/OFF Pin

GENERAL DESCRIPTION

The AMS500 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered systems.

These devices feature very low quiescent current of 0.8mA or less when supplying 50mA loads. This unique characteristic and

the low input-output differential required for proper regulation (0.2V for output currents of 100mA) make the AMS500 ideal to

use for standby power systems.

Internal circuitry of AMS500 is protected from input fault conditions caused by input voltages that exceed maximum rated input

voltage. During line transients, when the input voltage to the regulator can momentarily exceed the specified maximum

operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The AMS500 series

also includes internal current limiting, thermal shutdown.

The AMS500 is offered in 3 lead TO-92, SOT-89 and 5 leads SOT-23 packages.

ORDERING INFORMATION

OUTPUT

PACKAGE TYPE

TEMP.

VOLTAGE

3L TO-92

SOT-89

SOT-23-5

RANGE

FIXED

AMS500N-X

AMS500L-X

AMS500M1-X

IND

ADJ.

AMS500M1

IND

X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.

PIN CONNECTIONS

TO-92

Plastic Package (N)

SOT-89

(L)

5 Lead SOT-23

(M1)

OUTPUT

INPUT

GND

1

2

3

OUTPUT

GND

INPUT

INPUT

OUTPUT

ON/OFF

ADJ / N/C

GROUND

1

2

5

3

4

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