Advanced Monolithic Systems, Inc.

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

Advanced

AMS2931

Monolithic

100mA LOW DROPOUT VOLTAGE REGULATOR

Systems

FEATURES

APPLICATIONS

•• 5V and Adjustable Versions Available*

•• Battery Powered Systems

•• Output Current in excess of 100mA

•• Portable Consumer Equipment

•• Very Low Quiescent Current

•• Cordless Telephones

•• Reverse Battery Protection

•• Portable (Notebook) Computers

•• Input-output Differential less than 0.6V

•• Portable Instrumentation

•• Short Circuit protection

•• Radio Control Systems

•• Internal Thermal Overload Protection

•• Automotive Electronics

•• 60V Load Dump Protection

•• -50V Reverse Transient Protection

•• Mirror Image Insertion Protection

GENERAL DESCRIPTION

The AMS2931 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 1mA or less when supplying 10mA loads. This unique

characteristic and the extremely low input -output differential required for proper regulation (0.2V for output currents of

10mA) make the AMS2931 ideal to use for standby power systems.

Originally designed for automotive applications, the AMS2931 and all regulated circuitry are protected from input fault

conditions caused by reverse battery installation or two battery jump starts. During line transients, such as load dump (60V)

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 AMS2931 series also includes internal current

limiting, thermal shutdown, and is able to withstand temporary power-up with mirror-image insertion.

The AMS2931 is offered in the 3-pin TO-92 package, 8-pin plastic SOIC, TO-220 and TO-263 packages.

ORDERING INFORMATION

OUTPUT

PACKAGE TYPE

OPER. TEMP

VOLTAGE

TO-92

8 LEAD SOIC

TO-220

TO-263

RANGE

FIXED*

AMS2931AN-X

AMS2931AS-X

AMS2931AT-X

AMS2931AM-X

IND

AMS2931N-X

AMS2931S-X

AMS2931T-X

AMS2931M-X

IND

ADJ.

AMS2931CS

IND

X = 5V

*For additional available fixed voltages contact factory