ADMOS AMS112M1-5.0, AMS112M1-3.5 Datasheet

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

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 VIN, 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 30µV

rms

,

an external capacitor can be connected to the noise bypass pin. These devices feature very low quiescent current of 1mA when
supplying 30mA loads (180µA 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

GROUND12

5

3

4

Bottom View

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

AMS112

ABSOLUTE MAXIMUM RATINGS (Note 1)

Input Voltage 16V Maximum Junction Temperature

+150°C

Power Dissipation 400mW Storage Temperature

-55°C to +150°C

Operating Temperature Range

-30°C to +80°C

Lead Temperature (Soldering 10 sec)

230°C

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at TA=25°C, VIN =V

OUT

+1V, CP = 0.1µF unless otherwise noted.

PARAMETER CONDITIONS

(Note 2)

Min.

AMS112-X

Typ.

Max.

Units

Output Voltage VIN = V

OUT

+1V -3 +3 %

Quiescent Current I

O

= 0 mA, Except I

CONT

170 350

µA

Standby Current VIN = 8V, at output off 0.1

µA

Line Regulation VIN = V

OUT

+1V to V

OUT

+6V 3 20 mV

Load Regulation

5mA ≤I

O

≤ 60 mA

10 50 mV

Dropout Voltage I

O

= 60 mA

I

O

= 150 mA

160
290

260
400

mV
mV

Output Current 180

240 mA

Ripple Rejection

100mV

rms

, IO=10mA

55 dB

Output Noise Voltage

10Hz < f < 80kHz, IO=30mA

30

µVrms

Temperature Coefficient

IO=10mA, -20°C≤TA≤+75°C

0.2

mV/°C

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specifications

On/Off Current

Output On

12 30

µA

On/Off Voltage

Output On
Output Off

1.8

0.6

V
V

Output Rise Time

I

O

= 30 mA, V

CONT

= 0V to 1.8V

0.3 ms

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test conditions, see
the Electrical Characteristics tables.

Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used.