Features and Benefits

  • +7V to +22V Input Voltage Range
  • Digitally Adjustable 1.25V to 2V Output Voltage
  • 7A Output Current Capability
  • ±1% DC Output Accuracy
  • Efficiency = 87%, VIN = 7V, VOUT = 1.7V (at IOUT = 3A)
  • Fast MOSFETs for Low Switching Losses
  • Tight PC Board Layout for Low Switching Losses
  • Power-Good Output
  • 300kHz Switching Frequency
  • Overvoltage and Undervoltage Protection
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX1636 CPU supply evaluation kit (EV kit) circuit is intended for converting high-voltage battery power into a low-voltage supply rail for next-generation notebook CPU cores. The output is digitally adjustable between 1.25V and 2V, in 50mV increments. The input range is +7V to +22V. It delivers up to 7A output current with greater than 87% efficiency. The MAX1636 features ±1% DC output accuracy over all conditions of line, load, and temperature. The fully assembled and tested EV kit has excellent dynamic response to correct for fast load transients.

This EV kit is very specific to notebook CPU core power supplies, and includes a digital-to-analog converter (DAC), op-amp buffer, and other high-performance components tailored to this demanding application. However, the MAX1636 is a general-purpose, stand-alone device that can be used without the DAC; see the MAX1636 data sheet for standard application circuits.


  • Bus-Termination Supplies
  • Computers: Desktop, Workstation, Server
  • Notebook Computers
  • Subnotebook Computers