General Description
The MIC5309 is a high performance, µCap low dropout regulator, offering ultra-low operating current while maintaining very fast transient response. The MIC5309 can source up to 300mA of output current and can regulate down from a low input supply voltage to increase system efficiency.

Features
• Input voltage range: 1.7V to 5.5V
• Guaranteed 300mA over temperature
• Ultra Low dropout voltage of 100mV typical 300mA
• High PSRR, up to 90dB @ 1kHz
• Output Voltage range: 0.8V to 2.0V
• Very low ground current – 23µA under full load
• Bias supply voltage range: 2.5V to 5.5V
• Stable with 1µF ceramic output capacitor
• 300mA maximum output current at 1.7V input voltage
• Very fast transient response – ideal for digital loads
• Thermal shutdown and current limit protection
• Tiny 6-pin 1.6mm x 1.6mm Thin MLF® package
• Cost effective 6-pin TSOT-23 package

Applications
• Mobile Phones
• PDAs
• GPS Receivers
• Portable Electronics