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Analog Devices / Maxim Integrated MAX25608 12-Switch LED Matrix Manager

Analog Devices MAX25608 12-Switch High Brightness LED Matrix Manager is designed for automotive lighting with a 12-switch array for bypassing individual LEDs in a single or dual string application. Twelve individually controlled N-channel MOSFET switches rated for 14V with an on-resistance of 0.06Ω are also featured on the MAX25608. A single current source powers all the LEDs connected in the series. The LED Matrix Manager 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. The MAX25608 enables for parallel connection of two switches to bypass high-current LEDs. The IC includes an internal charge pump that provides power for the gate drive for the LED bypass switches.

Analog Devices MAX25608 LED Matrix Manager offers 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 MAX25608 is offered in a 28-pin TSSOP package with an exposed pad.

Features

  • Automotive ready: AEC-Q100 qualified
  • Flexible configuration
    • Up to twelve switches in series for a single string
    • Two substrings of six series switches per string
  • 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
  • Robust serial interface
    • Multi-drop UART communication interface
    • Up to 16 addressable devices
    • Compatible with CAN physical layer
  • Protection features and packages 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

Applications

  • Automotive matrix LED systems
  • Adaptive drive beam lights

Associated Evaluation System

MAX25608EVSYS Evaluation System

Analog Devices / Maxim Integrated MAX25608EVSYS Evaluation System

A demonstration and development platform for the MAX25608 12-Switch LED Matrix Manager.

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Simplified Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX25608 12-Switch LED Matrix Manager
Publicado: 2021-10-18 | Actualizado: 2023-04-17