General Description

The MIC39150, MIC39151, and MIC39152 are 1.5A LDO voltage regulators that provide a low voltage, high current output with a minimum of external components. Utilizing Micrel’s proprietary Super βeta PNP? pass element, the MIC39150/1/2 offers extremely low dropout (typically 375mV at 1.5A) and low ground current (typically 17mA at 1.5A).

The MIC39150/1/2 are ideal for PC add-in cards that need to convert from 3.3V to 2.5V or 2.5V to 1.8V with a guaranteed maximum dropout voltage of 500mV over all operating conditions. The MIC39150/1/2 exhibit fast transient response for heavy switching applications and requires only 10μF of output capacitance to maintain stability and achieve fast transient response.

特性 Features

? 1.5A minimum guaranteed output current

? 500mV maximum dropout voltage over temperature

–Ideal for 3.0V to 2.5V conversion

–Ideal for 2.5 to 1.8V or 1.65V conversion

? 1 initial accuracy

?Low ground current

? Current limiting and Thermal shutdown

? Reversed-battery and reversed lead insertion protection

?Reversed-leakage protection

? Fast transient response

? TTL/CMOS compatible enable pin (MIC39151/2 only)

? Error flag output (MIC39151 only)

? Adjustable output (MIC39152 only)

? Power D-Pak package (TO-252) Adjustable only

? Power D2Pak package (TO-263)

Applications

? Low-voltage digital ICs

? LDO linear regulator for PC add-in cards

? High-efficiency linear power supplies

? SMPS post regulator

? Low-voltage microcontrollers

? StrongARM? processor supply