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General Description

The MIC5249 is an efficient, precise 300mA CMOS voltage regulator with power-on reset delay which can be implemented via an external capacitor. It offers 1 initial accuracy, extremely-low-dropout voltage (typically 400mV @ 300mA), and low ground current (typically 85mA) over load.

Features

? 300mA output current

? High PSRR: 65dB@120Hz

? Stable with ceramic output capacitor

? Power-on RESET output with adjustable delay time

? High output accuracy:

¨C ¡À1.0 initial accuracy

¨C ¡À3.0 over temperature

? Low dropout voltage of 400mV @ 300mA

? Low quiescent current: 85?A

? Zero current shutdown mode

? Thermal shutdown protection

? Current-limit protection

? Tiny MSOP-8 package

Applications

? Cellular phones

? PDAs

? Fiber optic modules