LP2957 Datasheet (National Semiconductor)

LP2957, 5V Low-Dropout Regulator

The LP2957 is a 5V micropower voltage regulator with electronic shutdown, error flag, very low quiescent current (150 µA typical at 1 mA load), and very low dropout voltage (470 mV typical at 250 mA load current).

Output can be wired for snap-on/snap-off operation to eliminate transition voltage sta

LP2957 Features

* n n n n n n n n n n 5V output within 1.4% over temperature (A grade) Easily programmed for snap-on/snap-off output Guaranteed 250 mA output current Extremely low quiescent current Low Input-Output voltage required for regulation Reverse battery protection Extremely tight line and load regulation Ver