SC33982CPNA High-Side Switch IC for Fan Motors - 2.0 mΩ, SPI Control, 27V

SC33982CPNA is a single-channel intelligent high-side power switch engineered to replace traditional electromechanical relays and fuses in automotive power systems . This self-protected silicon switch integrates a 2.0 mΩ high-side MOSFET, making it ideal for driving DC fan motors, solenoids, and other inductive loads in body control modules and engine cooling applications .

The device operates across a wide 6.0 V to 27 V supply range, ensuring stable performance under harsh battery conditions, including cold-crank scenarios .

Advanced control and diagnostics are managed via the Serial Peripheral Interface (SPI), allowing real-time status reporting on over-current, open-load, over-temperature, under-voltage, and over-voltage conditions . A dedicated parallel input is also available for direct PWM-based fan speed control .

The chip features programmable fault trip thresholds, slew rate control, and a watchdog timer to enhance system reliability. Standby current is less than 5.0 µA, minimizing battery drain in parked vehicles .

Housed in a compact 16-pin PQFN package, this AEC-Q100 qualified device supports an operating temperature range of -40°C to 125°C, making it suitable for under-hood environments . Its self-recovery features and robust protection make it an excellent replacement for failed fan motor drivers and power distribution circuits.