Features and Benefits

  • Highly Integrated Solution with Integrated Shield Inductor
  • Wide 11V to 60V Input Range
  • Preset 5V Output with a Fixed Resistor-Divider on the Feedback Pin (FB)
  • Programmable Output Voltage Feature (0.9V to 12V)
  • Up to 2.5A Output Current
  • High 93% Efficiency (VIN = 12V, VOUT = 5V at 1.0A)
  • 500kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • Selectable PWM, PFM, or DCM Mode
  • Open-Drain Active-Low RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Low-Profile, Surface-Mount Components
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested
  • Proven PCB Layout

Product Details

The MAXM17503 evaluation kit (EV kit) is a demonstration circuit of the MAXM17503 high-voltage, high-efficiency, current-mode scheme, synchronous step-down DC-DC switching power module. The EV kit is designed for a 5V output and delivers up to a 2.5A load current from a wide input voltage range of 11V to 60V. The EV kit switches at an optimal 500kHz switching frequency to allow the use of small component sizes, helping to minimize solution size while maintaining high-performance. The EV kit provides a precision-enable input, an open-drain active-low RESET output signal, and external frequency synchronization to provide a simple and reliable startup sequence and eliminate beat frequency between regulators. The EV kit also includes optional component footprints to program different output voltages, an adjustable input undervoltage-lockout, and a soft-start time to control inrush current during startup. The MAXM17503 IC data sheet provides a complete description of the part that should be read in conjunction with this data sheet prior to modifying the demo circuit.


  • Base Station Point-of-Load Regulator
  • Distributed Supply Regulation
  • FPGA and DSP Point-of-Load Regulator
  • HVAC and Building Control
  • Industrial Power Supplies

Applicable Parts