MIC5350

Dual 300mA/500mA LDO

ULDO is a trademark of Micrel, Inc

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

June 2010

M9999-060410

General Description

The MIC5350 is a tiny Dual Ultra Low-Dropout (ULDO™)

linear regulator ideally suited for portable electronics due

to its low output noise. The MIC5350 integrates two high-

into a tiny 2mm x 2mm leadless Thin MLF

which provides exceptional thermal characteristics.

The MIC5350 is designed to be stable with small ceramic

output capacitors thereby reducing required board space

and component cost. The combination of extremely low-

drop-out voltage, low output noise and exceptional thermal

package characteristics makes it ideal for powering RF

and noise-sensitive circuitry, cellular phone camera

modules, imaging sensors for digital still cameras, PDAs,

MP3 players and WebCam applications.

The MIC5350 ULDO™ is available in fixed-output voltages

in the tiny 8-pin 2mm x 2mm leadless Thin MLF

which occupies less than half the board area of a single

SOT23-6

package.

Additional

voltage

options

are

available. For more information, contact Micrel marketing.

Data sheets and support documentation can be found on

Features

• 2.6V to 5.5V input voltage range

• Ultra-low dropout voltage: 75mV @ 300mA and 125mV

@ 500mA

• ±2% initial output accuracy

• Excellent Load/Line transient response

• Fast start-up time: 30µs

• µCap stable with 2.2µF ceramic capacitors

• Thermal shutdown protection

• Low quiescent current: 130µA with both outputs at

maximum load

• Current-limit protection

Applications

• Mobile phones

• PDAs

• GPS receivers

• Portable electronics

• Portable media players

• Digital still and video cameras

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Typical Application

RF Power Supply Circuit