Melexis – MLX83100: Automotive Full Bridge MOSFET Pre-Driver

The MLX83100 has the capability to simultaneously drive four 500nC-rated N-FETs at up to 28V operating voltage with minimal self-heating. The device supports 45V automotive load dump conditions. An integrated bootstrap function and charge pump allow for support of supply voltages down to 4.5V, ensuring continuous operation under automotive crank conditions. The device thereby supports 100% pulse width modulated (PWM) operation.


  • Optional charge pump for low supply voltage operation
  • Compatible with 3V and 5V microcontrollers
  • 100% PWM operation
  • Fault interrupt and feedback to microcontroller
  • Over-temperature protection
  • Alternative charge pump configuration
  • Converts 4 (or 2) PWM inputs to drive 4 external N-FETs
  • Low offset, low drift, fast current sense amplifier
  • Under- and over-voltage protection
  • VDS & VGS external FET monitoring