General Description

The MIC5319 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and very-low noise while consuming low ground current.

Features

• Ultra-low dropout voltage 200mV @ 500mA
• Input voltage range: 2.5 to 5.5V
• Stable with ceramic output capacitor
• Low output noise: 40µVrms
• Low quiescent current of 90µA total
• High PSRR, up to 70dB @1kHz
• Fast turn-on-time: 40µs typical
• High-output accuracy:
− ±1.0% initial accuracy
− ±2.0% over temperature
• Thermal-shutdown protection
• Current-limit protection
• Logic-controlled Enable
• Tiny 2mm x 2mm MLF® package, 500mA continuous
• Thin SOT-23-5 package, 500mA peak

Applications

• Cellular phones
• PDAs
• Fiber optic modules
• Portable electronics
• Notebook PCs
• Audio Codec power supplies