The NCP303LSN27T1G is an ultralow current Voltage Detector with active-low open-drain output. The NCP302 series second generation voltage detector contains a programmable time delay generator. This device is specifically designed for use as reset controllers in portable microprocessor based systems where extended battery life is paramount. It features a highly accurate under-voltage detector with hysteresis and an externally programmable time delay generator. This combination of features prevents erratic system reset operation.