Overview

Features and Benefits

  • Input Voltage: 4.5V to 36V (Up to 50V Load Dump)
  • Drives Six Strings of HB LEDs
  • LED Current: 20mA to 120mA
  • Demonstrates Both Phase-Shifted and Direct PWM Dimming
  • Demonstrates Undervoltage Lockout and Output Short Protection
  • Demonstrates Cycle-by-Cycle Current Limit and Thermal-Shutdown Feature
  • Demonstrates 5V, 30mA LDO Output Capability
  • Proven PCB and Thermal Design
  • Fully Assembled and Tested

Product Details

The MAX20056B evaluation kit (EV kit) demonstrates the MAX20056B, an integrated, 6-channel high-brightness LED driver with very wide PWM dimming ratio and phase shifting for automotive displays.

The EV kit operates from a DC supply voltage from 4.5V to 36V and the switching frequency is set at 400kHz. Spread-spectrum mode (SSM) is enabled for EMI improvement. The EV kit demonstrates direct dim and phase-shifted pulse-width modulation (PWM) dimming. The EV kit also demonstrates short-LED, open- LED, and overtemperature-fault protection.

For operation at switching frequencies other than 400kHz, the external components should be chosen according to the calculations in the MAX20056B IC data sheet.

Applications

  • Automotive Central Information Displays
  • Automotive Dashboards
  • Automotive Head-Up Displays
  • Automotive Navigation Systems

Applicable Parts