Features and Benefits

  • 1.8A Guaranteed Output Current
  • I²C-Programmable VOUT (750mV to 1.38V in 10mV Steps)
  • Operates from 2.5V to 5.5V Input Supply
  • On-Chip FET and Synchronous Rectifier
  • Fixed 3.25MHz PWM Switching Frequency
  • Synchronizes to 13MHz, 19.2MHz, or 26MHz System Clock When Available
  • Small 1µH Inductor
  • Initial Accuracy 0.5% at 1.25V Output
  • 2.0% Output Accuracy Over Load, Line, and Temperature
  • Power-Save Mode Increases Light Load Efficiency
  • Overvoltage and Overcurrent Protection
  • Thermal-Shutdown Protection
  • On-Board USB-to-I²C Interface

Product Details

The MAX8649 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX8649 1.8A step-down regulator. The EV kit operates from a 2.5V to 5.5V supply voltage and outputs a voltage programmable from 0.75V to 1.38V at up to 1.8A. An on-board USB-to-I²C interface and EV kit software control the output voltage, operating modes, and other features of the IC.


  • Cell Phones and Smartphones
  • PDAs and MP3 Players

Applicable Parts