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
is not used, the control terminal should be connected to a logic high level or V IN , therefore allowing the regulator to be ON.
The regulator will be ON when the control terminal voltage is grater than 1.8V. To lower the output noise level to 30 µV r ms ,
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