MAX16826

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Programmable, Four-String HB LED Driver with Output-Voltage Optimization and Fault Detection

Programmable, Four-String LED Driver with Integrated ADC Optimizes Output Voltage and Detects LED Fault Conditions

Data Sheet (Rev. 8) Product Selection Table
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Overview

  • 4 Channels of Programmable, Fault-Protected, Constant-Current Source-Driver Controllers for All White, RGB, or RGB Plus Amber LED Configurations
    • Drives One to Four LED Strings
    • Individual PWM Dimming Inputs per String
    • Very Wide Dimming Range
  • Configurable as a boost or SEPIC Converter with Programmable 100kHz to 1MHz Switching Frequency for Design Flexibility
    • Integrated Boost/SEPIC Controller
    • External MOSFETs Allow Wide-Range LED Current with Multiple LEDs per String
    • 200kHz to 2MHz Programmable Switching Frequency for Optimizing Size vs. Efficiency
    • External Switching-Frequency Synchronization
  • I2C Allows the Current-Sink Drain Voltages to be Read to Minimize Power Dissipation and Detect LED String Fault Conditions
    • 7-Bit Internal ADC for LED Voltage Monitoring and Optimization
    • Dynamic Adjustment of LED String Currents and Output Voltage
    • Standby Mode
  • Protection Features Improve Reliability
    • LED Short and Open Detection
    • Overvoltage and Overtemperature Protection
MAX16826
Programmable, Four-String HB LED Driver with Output-Voltage Optimization and Fault Detection
MAX16826: Simplified Block Diagram
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Documentation

Data Sheet 1

Design Note 1

Technical Articles 2

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Software Resources

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Tools & Simulations

Software Development 1

SPICE Model 1

Evaluation Kits

MAX16826EVKIT

Evaluation Kit for the MAX16826

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Features and Benefits

  • Four Independently Controllable LED Strings
  • 7 LEDs Per String Configuration
  • Independently Programmable 50mA to 150mA String Current
  • 7.5V to 22V Input Voltage
  • Can Withstand Automotive Load Dump Up to 40V for 400ms
  • 0% to 100% DIM Duty Cycle Range
  • Shorted LED Protection and Detection
  • Open LED String Detection
  • Adaptive Boost-Stage Voltage Optimization
  • Convenient Breakaway LED Driver Board Easily Adaptable to End Application
  • Low Mechanical Profile
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • USB-PC Interface
  • USB-to-I²C On-Board Circuitry
  • Fully Assembled and Tested
  • Lead-Free and RoHS Compliant

Product Details

The MAX16826 evaluation kit (EV kit) provides a proven design to evaluate the MAX16826, a four-string, I²C programmable high-brightness LED (HB LED) driver with PWM dimming control. The EV kit also includes Windows® 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX16826. The MAX16826 EV kit PCB comes with a MAX16826ATJ+ installed. The EV kit is configured in a boost application.

This EV kit can be modified by changing component values on the board for other configurations (including RGB LED applications). Refer to the MAX16826 IC data sheet for more information.

Applications

  • LCD Backlighting
  • Automotive Infotainment Displays
  • Automotive Cluster Displays
  • Industrial and Desktop Monitors
  • LCD TVs
  • Automotive Lighting
  • Adaptive Front Lighting
  • Low- and High-Beam Assemblies
MAX16826EVKIT
Evaluation Kit for the MAX16826

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