Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

Advanced

AMS112

Monolithic

150mA LOW DROPOUT VOLTAGE REGULATOR

Systems

WITH ON/OFF SWITCH

PRELIMINARY INFORMATION

FEATURES

APPLICATIONS

•• 3.3V and 5V Voltage Available*

•• Battery Powered Systems

•• Active High On/Off Control

•• Portable Consumer Equipment

•• Output Current of 150mA

•• Cordless Telephones

•• Very Low Quiescent Current

•• Portable (Notebook) Computers

•• Low Dropout Voltage of 80mV at 30mA

•• Portable Instrumentation

•• Very Low Noise

•• Radio Control Systems

•• Short Circuit Protection

•• Personal Communication Equipment

•• Internal Thermal Shutdown

•• Toys

•• Space Saving 5 Lead SOT-23 Package

•• Low Voltage Systems

GENERAL DESCRIPTION

The AMS112 series consists of positive fixed voltage regulators featuring an internal electronic switch controlled by TTL or

CMOS logic levels. When the Control pin is pulled to a logic high level, the device is in the ON state. If the control function

The regulator will be ON when the control terminal voltage is grater than 1.8V. To lower the output noise level to 30

µV

an external capacitor can be connected to the noise bypass pin. These devices feature very low quiescent current of 1mA when

supplying 30mA loads (180

µA at no load). This unique characteristic and the low standby current (typ. 100nA) make the

AMS112 ideal to use for standby power systems. Like other regulators the AMS112 series also includes internal current

limiting and thermal shutdown.

The AMS112 is offered in 3.3V and 5.0V output voltages, and is available in the 5-pin SOT-23 surface mount package.

ORDERING INFORMATION

PIN CONNECTIONS

PACKAGE TYPE

OPERATING TEMP.

5L SOT-23

RANGE

AMS112M1-X

IND

X =3.3V or 5V

*For additional available fixed voltages contact factory

5 Lead SOT-23

(M1)

ON/OFF

INPUT

BYPASS

OUTPUT

GROUND

1

2

5

3

4

Bottom View