Overview

Features and Benefits

  • 7.5V to 60V Input-Voltage Range for the Step-Down Converter
  • 3.3V Output Voltage, Up To 50mA Continuous Load Current
  • 87% Peak Efficiency
  • Minimal Number of External Components
  • 70kHz Switching Frequency
  • Resistor Programmable Input Enable-Undervoltage (EN/UV) and Hysteresis (HYST)
  • nternal Loop Compensation
  • 0.8ms (typ) Internal Soft-Start Time
  • Open-Drain RESET Output to Monitor Output Voltage
  • Bootstrap from Output Voltage to Improve Efficiency
  • Hiccup-Mode Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17555A evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17555A, 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 7.5V to 60V input and provides a 3.3V, 50mA output. The EV kit is set up to turn ON at 10.1V (max) and turn OFF at 7.5V (max) using the EN/UV and HYST pins. The MAX17555A works at a fixed 70kHz frequency and delivers a peak efficiency of 87% with supplied components.

The EV kit is simple to use and easily configurable with minimal external components. The MAX17555A features a 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, as well as thermal shutdown. The EV kit is complaint with CISPR32 class B standard.

Applicable Parts

System Requirements

  • MAX17555AEVKIT#
  • 60V adjustable, 0.5A DC power supply
  • Load resistors capable of sinking up to 50mA at 3.3V
  • Digital multimeters (DMM)

Documentation & Resources