Microchip – MCP16331: 50V Integrated Step Down Regulator


The MCP16331 is a highly integrated, high efficiency, fixed frequency, step down DC-DC converter that operates from input voltage sources up to 50V. Integrated features include a high side switch, fixed frequency peak current mode control, internal compensation, peak current limit and over-temperature protection. Minimal external components are necessary to develop a complete step down DC-DC converter power supply.


  • Up to 96% efficiency
  • 4.4V to 50V input voltage range
  • 2.0V to 24V output voltage range
  • Minimum 500mA output current
  • Internal soft start
  • 2% output voltage accuracy
  • 500kHz fixed frequency
  • Adjustable output voltage
  • 6μA shutdown current
  • 6-lead SOT-23 and 8-lead 2 x 3 TDFN packages