DESCRIPTION

The L4957 devices are Ultra Low Drop Output lin ear regulators with an internal N-channel MOS of 200mΩ particulary suitable for low voltage/low dropout applications. Operating with a input voltage from 3V to 6.5V they are capable to deliver up to 4A at 1.5V or 2.5V fixed output voltages.

1.5V AND 2.5V FIXED OUTPUT VOLTAGE

3V TO 6.5V INPUT VOLTAGE RANGE

200mΩ Rdson TYPICAL @ Tj = 125°C

0.6V max. DROP-OUT AT 2A

EXCELLENT LOAD REGULATION

0.6mA QUIESCENT CURRENT AT ANY LOAD

SHORT CIRCUIT PROTECTION WITH FOLD BACK

THERMAL SHUTDOWN

APPLICATIONS

MOTHER BOARDS

PROCESSOR I/O & SUPPLIES

LOW VOLTAGE MEMORY & CHIP SET SUPPLIES

GRAPHIC & SOUND CARDS

LOW VOLTAGE LOGIC SUPPLIES

POST REGULATOR FOR SMPS