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.

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