Features and Benefits

  • Internal 37mΩ On-Resistance MOSFETs
  • 3A Output PWM Step-Down Regulator
  • ±1% Output Accuracy over Load, Line, and Temperature
  • Operates from 2.35V to 3.6V Input Supply
  • Adjustable Output from 0.6V to (0.9 x VIN)
  • 500kHz to 2MHz Adjustable Frequency
  • Allows All-Ceramic Capacitor Design
  • Programmable Soft-Start Time
  • 24-Pin, 4mm x 4mm Thin QFN Package
  • REFIN for DDR Termination and Tracking Applications
  • Surface-Mount Components
  • Assembled and Tested
  • Product Details

    The MAX8643 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the capabilities of the MAX8643 integrated 3A step-down regulator. The EV kit generates a +1.8V output voltage at load currents up to 3A from a 2.35V to 3.6V input voltage range. The MAX8643 switches at 1MHz and up to 95% efficiency with the supplied components.


    • ASIC/CPU/DSP Core and I/O Voltages
    • Base-Station Power Supplies
    • DDR Power Supplies
    • POLs
    • RAID Control Power Supplies
    • Telecom and Networking Power Supplies

    Applicable Parts

    Documentation & Resources