MIC5209YU Datasheet PDF - Micrel

●General Description

●The MIC5209 is an effi cient linear voltage regulator with very low dropout voltage, typically 10mV at light loads and less than 500mV at full load, with better than 1% output voltage accuracy.

●Designed especially for hand-held, battery-powered devices, the MIC5209 features low ground current to help prolong battery life. An enable/shutdown pin on SO-8 and TO-263-5 versions can further improve battery life with near-zero shutdown current.

●Key features include reversed-battery protection, current limiting, overtemperature shutdown, ultra-low-noise capability (SO-8 and TO-263-5 versions), and availability in thermally effi cient packaging. The MIC5209 is available in adjustable or fi xed output voltages.

●Features

●• Meets Intel® Slot 1 and Slot 2 requirements

●• Guaranteed 500mA output over the full operating temperature range

●• Low 500mV maximum dropout voltage at full load

●• Extremely tight load and line regulation

●• Thermally-effi cient surface-mount package

●• Low temperature coeffi cient

●• Current and thermal limiting

●• Reversed-battery protection

●• No-load stability

●• 1% output accuracy

●• Ultra-low-noise capability in SO-8 and TO-263-5

●• Ultra-small 3mm x 3mm MLF™ package

●Applications

●• Pentium II Slot 1 and Slot 2 support circuits

●• Laptop, notebook, and palmtop computers

●• Cellular telephones

●• Consumer and personal electronics

●• SMPS post-regulator/dc-to-dc modules

●• High-effi ciency linear power supplies