General Description

The MIC5322 is a tiny Dual Ultra Low-Dropout (ULDO™) linear regulator ideally suited for those applications that require high Power Supply Rejection Ratio (PSRR). It provides a bypass pin to increase PSRR for noise sensitive portable electronics. The MIC5322 integrates two high-performance; 150mA ULDOs into a very compact 1.6mm x 1.6mm leadless Thin MLF® package with 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

• 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

• GPS receivers

• Portable media players

• Digital still and video cameras

• PDAs

• Portable electronics