Overview

Features and Benefits

  • 10V to 60V Input-Voltage Range for the Step-Down Converter
  • 5V Output Voltage, Up to 50mA Continuous Load Current
  • 87.3% Peak Efficiency
  • Minimal Number of External Components
  • 70kHz Switching Frequency
  • Resistor Programmable Input Enable-Undervoltage (EN/UV) and Hysteresis (HYST)
  • Internal Loop Compensation
  • 0.8ms (typ) Internal Soft-Start Time
  • Open-Drain RESET Output to Monitor Output Voltage
  • Boot-Strap from Output Voltage to Improve Efficiency
  • Hiccup-Mode Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17555B evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17555B, a 4V to 60V, 50mA, ultra-small, high efficiency, Synchronous Step-Down DC-DC Converter in an 8-pin TDFN (2mm x 2mm) package. The EV kit is designed to operate over a 10V to 60V input and provides a 5V, 50mA output. The EV kit is set up to turn ON at 13V (max) and turn OFF at 10V (max) using the EN/UV and HYST pins. The step-down converter is switch at a fixed 70kHz frequency and delivers a peak efficiency of 87.3% with supplied components.

The EV kit is simple to use and easily configurable with minimal external components. The MAX17555B features programmable input EN/UV and HYST threshold, and an open-drain RESET signal. The device offers built-in hiccup mode protection for overload and short circuit conditions, and thermal shutdown. The EV kit is complaint with the CISPR32 class B standard.

Applicable Parts

System Requirements

  • MAX17555BEVKIT#
  • 60V adjustable, 0.5A DC power supply
  • Load resistors capable of sinking up to 50mA at 5V
  • Digital multimeters (DMM)

Documentation & Resources