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4 x 24 Automotive LED Matrix Driver

Industry-First Matrix LED Driver for Automotive Applications

Product Details

Key Features

Parametric specs for LED Drivers
VIN (V) (min) 2.7
VIN (V) (max) 5.5
Max. No. of LEDs 1344
# LED Channels 96
LED Configuration Series-Parallel
ILED per Channel (A) (max) 0.72
PWM Dimming Freq. (kHz) (max) 20
Dimming Ratio (max) 20000
Dimming Control Analog
PWM
SPI Serial
VDROPOUT (mV) (typ) 500
POUT (W) 100
ICC (mA) (max) 25
LED String Volt. (V) (max) 14
Package/Pins TQFN-CU/48
TSSOP, EXP/48
Budgetary
Price (See Notes)
3.01
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Simplified Block Diagram

Technical Docs

Data Sheet 4 x 24 Automotive LED Matrix Driver Oct 11, 2021

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Parameters

Parametric specs for LED Drivers
VIN (V) (min) 2.7
VIN (V) (max) 5.5
Max. No. of LEDs 1344
# LED Channels 96
LED Configuration Series-Parallel
ILED per Channel (A) (max) 0.72
PWM Dimming Freq. (kHz) (max) 20
Dimming Ratio (max) 20000
Dimming Control Analog
PWM
SPI Serial
VDROPOUT (mV) (typ) 500
POUT (W) 100
ICC (mA) (max) 25
LED String Volt. (V) (max) 14
Package/Pins TQFN-CU/48
TSSOP, EXP/48
Budgetary
Price (See Notes)
3.01

Key Features

  • Flexible Configuration
    • Integrated Column Drivers
  • 24 Row Drivers
    • Up to 72mA Peak Output Current
    • Ghosting Elimination Features
  • Extensive Diagnostics
    • Shorted or Open LEDs
    • Thermal Warning/Shutdown
  • High-Speed Daisy-Chain
  • VSYNC Synchronization Input (Programmable Active High/Low)
  • 48-Lead TQFN and TSSOP Packages
  • AEC-Q100 Grade 1

Applications/Uses

  • Central Information Displays
  • Instrument Clusters
  • Interior Lighting

Description

The MAX25500 is a 4 x 24-channel modular matrix backlight driver for use with local-dimming automotive displays. The integrated current outputs can sink up to 72mA Light Emitting Diode (LED) current each. The source drive pins provide current to the columns of the matrix on a multiplexed basis. Device power comes from an external 3.3V or 5V supply, while the LED current-sink outputs can operate at up to 14V.

The device is highly flexible due to its programmability using the Serial Peripheral Interface (SPI). Among the programmable parameters are the LED current, individual Pulse-Width Modulation (PWM) settings, multiplex ratio, etc.

The device features a high-speed SPI for control using a daisy-chain.

The MAX25500 is available in TQFN and TSSOP packages, and operates in the -40°C to 125°C temperature range.

Simplified Block Diagram

Technical Docs

Data Sheet 4 x 24 Automotive LED Matrix Driver Oct 11, 2021

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .