The Bay Linear B1085 is Monolithic low power 3.0A Adjustable and fixed NPN voltage regulator that are easy to use with minimum external components. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at a maximum output current. Current limit is trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions. It is suitable for applications requiring a well-regulated positive output voltage with low input-output differential voltage. The B1085 Outstanding features include full power usage up to 3.0Amp of load current internal current limiting and thermal shutdown. A 10 F output capacitor is required on these new devices; how ever, this is usually included in most regulator design.