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MIC5327

300mA Low Quiescent Current LDO

Micrel 

MIC5327

300mA Low Quiescent Current LDO

General Description

The MIC5327 is a low quiescent current, low dropout

regulator designed for optimal performance in a small

space. The MIC5327 is capable of sourcing 300mA of

output current while only consuming 24µA of operating

current. This high performance LDO offers Low dropout,

fast transient response, good PSRR, and low output

voltage noise.

The MIC5327 is an ideal solution for battery operated

applications due to ultra low quiescent current and

extremely low dropout voltage of 180mV at 300mA.

Equipped with a TTL logic compatible enable pin, the

MIC5327 can be put into a zero-off-mode current state,

drawing virtually no current when disabled.

Board space and component cost is minimized because

the MIC5327 operates with very small 1μF ceramic

capacitors, provides fixed output voltages, and is available

in the tiny 1.2mm x 1.6mm Thin MLF® package.

MIC5327 also features thermal shutdown and current limit

protection.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• 300mA output current

• Input voltage range: 2.3V to 5.5V

• Low 24µA operating current

• Low dropout voltage of 180mV @ 300mA

• Fixed output voltages

• Stable with 1μF ceramic capacitors

• Thermal shutdown and current limit protection

• Tiny 4-pin 1.2mm x 1.6mm Thin MLF® package

Applications

• Mobile Phones

• GPS and Navigation Devices

• Portable Media Players

• Digital still and video cameras

• PDAs

• Portable Electronics

___________________________________________________________________________________________________________

Typical Application

MIC5327-xxYMT

VIN

VOUT

VOUT

VBAT

1µF

VEN

1µF

GND

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 2008

M9999-093008-A

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