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MAX25608 Twelve Switch High Brightness LED Matrix Manager for Automotive Front Lights

12/09/2022

Product Details

The MAX25608 12-switch matrix manager IC for automotive lighting applications includes a 12-switch array for bypassing individual LEDs in a single or dual string application. It features twelve individually controlled n-channel MOSFET switches rated for 14V with an on-resistance of 0.06Ω. A single current source can be used to power all the LEDs connected in series. Individual LEDs can be dimmed by turning on and off the bypass switches across each LED. The device can also be configured in two string applications with six switches in series per string. Each switch can be connected across one, two, or three LEDs in series. It also allows for parallel connection of two switches to bypass high-current LEDs. The IC also includes an internal charge pump that provides power for the gate drive for the LED bypass switches.

The MAX25608 features a serial peripheral interface (UART) for serial communication. Each switch can be turned fully on, fully off, or dimmed with or without fade transitions through the serial interface. The IC features open-LED protection as well as open and short LED fault reporting through the serial interface. The device is available in a 28-pin TSSOP package with exposed pad.

Applications

  • Automotive Matrix LED Systems
  • Adaptive Drive Beam Lights


Features and Benefits

  • Automotive Ready: AEC-Q100 Qualified
  • Flexible Configuration 
    • Up to Twelve Switches in Series for Single String
    • Two Sub Strings of Six Series Switches per String
  • Robust Serial Interface
    • Multi-Drop UART Communication Interface
    • Up to 16 Addressable Devices
    • Compatible with CAN Physical Layer
  • Optimal PWM Dimming Arrangement Provides Excellent Dimming Performance
    • Programmable 12-Bit PWM Dimming
    • Fade Transition Between PWM Dimming States
    • Internal or External Clock for PWM Dimming
    • Programmable Slew Rate for EMI Control
  • Protection Features and Package Improve Reliability
    • Open-LED Protection
    • NTC Temperature Monitor
    • Programmable Open and Short-LED Threshold
    • Open and Shorted-LED Fault Reporting
    • Thermally Enhanced 28-Pin TSSOP-EP