Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722 Fax (925) 443-0723

Advanced

AMS5105

Monolithic

500mA CMOS LOW DROPOUT VOLTAGE REGULATOR

Systems

RoHS compliant

FEATURES

APPLICATIONS

• Fixed and Adjustable Versions Available

• Cellular Telephones

• Output Current up to 500mA

• Portable Consumer Equipment

• Very Low Quiescent Current

• Portable (Notebook) Computers

• Input-output Differential less than 0.5V

• Battery Powered Systems

• Short Circuit Protection

• Portable Instrumentation

• Internal Thermal Overload Protection

• Radio Control Systems

• ENABLE Pin available in selected packages

• CD/DVD drives

GENERAL DESCRIPTION

The AMS5105 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered

systems. These devices feature very low quiescent current (500uA or less) when supplying loads up to 500mA, and a standby

current less than 500nA when disabled using the ENABLE pin (available in selected packages). These unique characteristics

and the low input-output differential required for proper regulation (0.5V for output currents of 500mA) make the AMS5105

ideal for use in standby power systems. Internal current limiting and thermal shutdown features provide protection for all

AMS5105 series devices regardless of package type. The AMS5105 is offered as fixed voltage regulators in the 5 lead SOT-23,

SOT-89, SOT-223, and 8 lead SOIC packages, and as adjustable voltage regulators in the 5 lead SOT-23 and 8 lead SOIC

packages. All devices in the 5 lead SOT-23 and 8 lead SOIC packages are provided with ENABLE pin.

ORDERING INFORMATION

OUTPUT

PACKAGE TYPE

TEMP.

VOLTAGE

5L SOT-23

SOT-89

SOT-223

SO-8

RANGE

FIXED

AMS5105M1-X

AMS5105L-X

AMS5105-X

AMS5105S-X

-25C to 125C

ADJUSTABLE

AMS5105M1

AMS5105S

-25C to 125C

X = 1.5V, 1.8V, 2.5V, 2.8V, 3.3V.

PIN CONNECTIONS

5 Lead SOT-23

(M1)

SOT-89

(L)

SOT-223

8 Lead SOIC

(S)

V

IN

V

OUT

ENABLE

FB

N/C

GROUND

1

2

5

3

4

12

3

GND

V

OUT

V

IN

12

3

GND

V

OUT

V

IN

ENABLE

N/C

V

OUT

FB

N/C

V

IN

GROUND

GROUND

GROUND

GROUND

1

2

8

4

3

7

5

6

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