LM2931 Datasheet | National Semiconductor

Description The LM2931 positive voltage regulator features a very low quiescent current of 1m A or less when supplying 10m A loads. This unique characteristic and the extremely low input-output differential required for proper regulation (0.2V for output currents of 10m A) make the LM2931 the ideal regulator for standby power systems. Applications include memory standby circuits, CMOS and other low power processor power supplies as well as systems demanding as much as 100m A of output current. Designed originally for automotive applications, the LM2931 and all regulated circuitry are protected from reverse battery installations or 2 battery jumps. During line transients, such as a load dump (60V) when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The...