General Description

The MIC39500 and MIC39501 are 5A low-dropout linear 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 MIC39500/1 offers extremely low dropout (typically 400mV at 5A) and low ground current (typically 70mA at 5A).

Features

• 5A minimum guaranteed output current

• 400mV dropout voltage

Ideal for 3.0V to 2.5V conversion

Ideal for 2.5V to 1.8V 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

• TO-263 and TO-220 packages

• TTL/CMOS compatible enable pin (MIC39501 only)

• Error fl ag output (MIC39501 only)

• Ceramic capacitor stable (See Application Information)

Applications

• Low Voltage Digital ICs

• LDO linear regulator for PC add-in cards

• High-effi ciency linear power supplies

• SMPS post regulator

• Multimedia and PC processor supplies

• Low-voltage microcontrollers

• StrongARM™ processor supply