LOW VOLTAGE DETECTOR CIRCUIT

A low voltage detection circuit includes bandgap and differential comparator circuits for generating a first signal proportional to the level of the supply voltage when it exceeds a predetermined range, and an output driver responsive to the first signal for generating an output indication representative of a low or failure condition of the supply voltage. A supplemental current source provides a bias current to the output driver in opposition to and much smaller than the first signal in order to proactively switch the output driver into the low or failure condition when the supply voltage, and the first signal representative thereof, fall below a predetermined minimum range.