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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.

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