L4957

The L4957 devices are Ultra Low Drop Output linear regulators with an internal N-channel MOS of 200mW 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.

The L4957 devices are ideal for use as one of the supplies required by processor, for example they are the cost effective and efficient solution for conversion
from 3.3V (rail bus) to 2.5V @ 2.5A or to 1.5V with high current rating.

Fast response transient minimise the output capacitor value. A minimum of 22mF assures the stability in all load conditions.

The on-chip trimming technique offers a tighter voltage reference tolerance (with ± 2% including line and load variation) beside to ensure a controlled short circuit current. Thermal shutdown provides protection against overload conditions that creates excessive junction temperature.