General Description

The MIC5303 is an ultra small, Ultra Low Dropout CMOS regulator, ULDO™ that is ideal for today’s most demanding portable applications including cellular phone RF power, camera modules, imaging sensors for digital still and video cameras, PDAs, portable media players (PMP) and PC cameras where board space is limited. It offers extremely low dropout voltage, very low output noise and can operate from a 2.3V to 5.5V input while delivering up to 300mA.

Features

• Ultra Small 1.2mm x 1.6mm Thin MLF® package

• Low Dropout Voltage: 100mV at 300mA

• Output noise 120µVrms

• Input voltage range: 2.3V to 5.5V

• 300mA guaranteed output current

• Stable with ceramic output capacitors

• Low quiescent current 85µA total

• 35µs turn-on time

• High output accuracy

– ±2 initial accuracy

– ±3 over temperature

• Thermal shutdown and current limit protection

Applications

• Mobile Phones

• PDAs

• GPS Receivers

• Portable Media Players

• Portable Electronics

• Digital Still & Video Cameras