Abstract: A latch circuit is provided which may be set to a predetermined logic state in response to a positive transitioning edge of a set signal and reset to an opposite logic state in response to a negative transitioning edge of a rest signal. A master circuit portion receives the set and reset signals and provides a control signal in response to the set and reset signals and the output signal. A slave circuit portion receives the control signal and provides the output signal in response to the control signal and the set and reset signals. By multiplexing set and reset enabling functions with common circuitry, a reduced amount of circuitry is required.

Abstract: A Schottky diode, whose forward voltage is 0.4 volts is connected between e load and one input of the sense amplifier, which has a minimum operating voltage of 0.6 volts. When the load becomes short circuited or drops to a very low resistance, the Schottky diode conducts to shut down the sense amplifier, which cuts off the series pass transistor. When the load resistance rises to a predetermined value, the Schottky diode becomes reverse biased, permitting the regulator to return to its normal regulation operation.