General Description

The MIC37100, MIC37101, and MIC37102 are 1A low dropout, linear voltage regulators that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Super βeta PNP? pass element, the MIC37100/01/02 offers extremely low dropout (typically 280mV at 1A) and low ground current (typically 11mA at 1A).

特性 Features

? Fixed and adjustable output voltages to 1.24V

? μCap Regulator, 10μF ceramic output capacitor stable

? 280mV typical dropout at 1A

– Ideal for 3.0V to 2.5V conversion

– Ideal for 2.5V to 1.8V, 1.65V or 1.5V conversion

? 1A minimum guaranteed output current

? 1 initial accuracy

? Low ground current

? Current limiting and thermal shutdown

? Reversed-leakage protection

? Fast transient response

? Low-profile SOT-223 package

? Power SO-8 package

? S-PAK package (MIC37102 only)

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