Super voltage regulator

A voltage regulator with properties like low voltage drop, 1 A current, protected against reversal and voltagepeaks up to 60 V, inexpensive, and simple to design in, is indeed a super device, It concerns here National Semiconductor's LM2941C, which is an integrated device with five pins. Three pins are for the usual connections; the fourth (GND) is required for the low voltage drop; and the fifth provides an additional on-off switching function.