Gate connects to the external N channel MOSFET gate. GATE is driven positive with respect to A by a driver operating from the voltage on BYP. A time-limited high current discharge source pulls GATE to GND when the fast turn-off comparator is activated. The high-current discharge is followed by a sustaining pull-down. The turn-off circuits are disabled by the thermal shutdown, leaving a resistive pull-down to keep the gate from floating. The gate connection should be kept low impedance to maximize turn-off current.