The APV1121SX is a photovoltaic MOSFET driver designed for high-speed switching and isolation in power supply and MOSFET driving applications. It features a typical release time of 0.1 ms enabling rapid MOSFET turn-off in urgent situations, and provides 2,500 V AC I/O isolation voltage in its SOP4-pin surface-mount package. The device operates over a temperature range of -40°C to +85°C with a typical drop-out voltage of 8.7 V and short circuit current of 14 µA at 10 mA input current. With an input/output capacitance of 0.8 pF to 1.5 pF and initial isolation resistance of 1,000 MO, the APV1121SX is ideal for isolated gate driving in photovoltaic inverters, industrial power supplies, and other high-voltage switching applications requiring reliable isolation and fast response times.