Features and Benefits

  • Load Currents Guaranteed to 200mA with No External MOSFET
  • Step-Up from a 2.0V Input
  • 170kHz High-Frequency Current-Mode PWM
  • 82% to 87% Typical Efficiencies at Full Load
  • Overcurrent and Soft-Start Protection
  • Shutdown Capability

Product Details

The MAX731 evaluation kit (EV kit) facilitates assembly and evaluation of Maxim's MAX731 +5V step-up current-mode DC-DC converter.

The EV kit includes all needed components (unassembled) and a printed circuit board. When completed, the EV kit is a working DC-DC step-up converter with +5V output voltage at 200mA.

Typical full-load efficiencies are 82% to 87%. The MAX731 uses current-mode pulse-width modulation (PWM) to provide precise output regulation and low subharmonic noise. Typical no-load supply current is 2mA.

The MAX731 features cycle-by-cycle current limiting, overcurrent limiting, external shutdown, and programmable soft-start protection.

The EV kit components are suitable for through-hole mounting to make construction and evaluation easy. Refer to the MAX731 data sheet for detailed electrical and operating specifications.


  • +5V-Logic Supply in +3V-Logic System
  • Battery-Powered Applications
  • Cell Phones
  • DC-DC Converter Module Replacement
  • Distributed Power Systems
  • Laptop Computers
  • Portable Instrumentation

Documentation & Resources