MIC5321-SJYD6 查看數據表（PDF） - Micrel

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MIC5321-SJYD6

Dual, High Performance 150mA µCap ULDO™

Micrel 

MIC5321

Dual, High Performance

150mA µCap ULDO™

General Description

The MIC5321 is a tiny Dual Ultra Low-Dropout

(ULDO™) linear regulator ideally suited for those

applications that require high PSRR because it

provides a bypass pin for those noise sensitive

portable electronics. The MIC5321 integrates two

high-performance; 150mA ULDOs into a very compact

1.6mm x 1.6mm leadless Thin MLF® package that

provides exceptional thermal package characteristics.

The MIC5321 is a µCap design which enables

operation with very small ceramic output capacitors

for stability, thereby reducing required board space

and component cost. The combination of extremely

low-drop-out voltage, very high power supply

rejection, very low output noise and exceptional

thermal package characteristics makes it ideal for

powering RF application, cellular phone camera

modules, imaging sensors for digital still cameras,

PDAs, MP3 players and WebCam applications.

The MIC5321 ULDO™ is available in fixed-output

voltages in the tiny 6-pin 1.6mm x 1.6mm leadless

Thin MLF® package which is only 2.56mm2 in area,

less than 30% the area of the SOT-23, TSOP and

MLF® 3x3 packages. It’s also available in the thin

SOT-23-6 lead package and the standard 6-pin

1.6mm x 1.6mm leadless package. Additional voltage

options are available. For more information, contact

Micrel marketing department.

Data sheets and support documentation can be found

on Micrel’s web site at www.micrel.com.

Features

• 2.3V to 5.5V input voltage range

• Ultra-low dropout voltage ULDO™ 35mV @

150mA

• Tiny 6-pin 1.6mm x 1.6mm Thin MLF® leadless

package

• Low cost TSOT-23-6 package

• Bypass pin for improved noise performance

• High PSRR – >75dB on each LDO

• Ultra low noise output - > 30µVrms

• Dual 150mA outputs

• µCap stable with 1µF ceramic capacitor

• Low quiescent current – 150µA

• Fast turn-on time – 45µs

• Thermal shutdown protection

• Current Limit protection

Applications

• Mobile phones

• PDAs

• GPS receivers

• Portable electronics

• Portable media players

• Digital still and video cameras

Typical Application

MIC5321-x.xYML

VIN VOUT 1

VOUT 2

EN

1µF

BYP

GND

0.01µF

Rx/Synth

Tx

RF

1µF 1µF Transceiver

RF Power Supply Circuit

ULDO is a trademark of Micrel, Inc.

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

May 2008

M9999-051508-E

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