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General Description

The MIC39100, MIC39101, and MIC39102 are 1A low-dropout linear voltage regulators that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel¡¯s proprietary Super ¦Âeta PNP? pass element, the MIC39100/1/2 offers extremely low dropout (typically 410mV at 1A) and low ground current (typically 11mA at 1A).

Features

? Fixed and adjustable output voltages to 1.24V

? 410mV typical dropout at 1A

Ideal for 3.0V to 2.5V conversion

Ideal for 2.5V to 1.8V conversion

? 1A minimum guaranteed output current

? 1 initial accuracy

? Low ground current

? Current limiting and thermal shutdown

? Reversed-battery protection

? Reversed-leakage protection

? Fast transient response

? Low-profile SOT-223 package

? Power SO-8 package

Applications

? LDO linear regulator for PC add-in cards

? PowerPC? power supplies

? High-efficiency linear power supplies

? SMPS post regulator

? Multimedia and PC processor supplies

? Battery chargers

? Low-voltage microcontrollers and digital logic