IC LM2931

Description
The LM2931xx are very low drop regulators. The
very low drop voltage and the low quiescent
current make them particular suitable for low
noise, low power applications and in battery
powered systems. In the 8 pin configuration (SO-
8), fully compatible to the older L78Lxx family, a
shut down logic control function is available.
This means that when the device is used as a
local regulator is possible to put a part of the
board in stand-by decreasing the total power
consumption. Ideal for automotive application the
LM2931xx is protected from reverse battery
installations or 2 battery jumps. During the
transient, such as a a load dump (60 V) when the
input voltage can exceed the specified maximum
operating input voltage (26 V), the regulator will
automatically shut down to protect both internal
circuit and the load.

Features
Very low dropout voltage (0.15 V typ. at 10 mA
load)
Low quiescent current (typ. 2.5 mA, at 100 mA
load)
Output current up to 100 mA
Adjustable (from VOUT = 2.5 V only SO-8) and
fixed (3.3 V & 5 V) output voltage version
Internal current and thermal limit
Load dump protection up to 60 V
Reverse transient protection up to -50 V
Temperature range: -40 to 125

IC LM2931
TO-92
Very low drop voltage regulators with inhibit function
Very low dropout voltage (0.15 V typ. at 10 mA
load)