
Micrel
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