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IS31FL3731 Matrix LED Driver Breakout Board

Adafruit offers their Charlieplexed PWM LED driver board and matching 9 x 16 LED matrices in various colors

Image of Adafruit IS31FL3731 Matrix LED Driver Breakout BoardAdafruit has designed a breakout board for ISSI’s IS31FL3731 I²C LED driver chip. The chip has the ability to PWM each individual LED in a 144-LED matrix, providing the ability to have beautiful LED lighting effects while reducing the required I/O pins. The driver allows each of the 144 LEDs to be set individually, and each LED can be dimmed individually with 8-bit, allowing 256 steps of linear dimming.

The IS31FL3731 can operate from 2.7 - 5.5 V power and logic, so it’s flexible for use with most microcontrollers and the address can be set easily using the onboard jumpers so that up to 4 matrices can share an I²C bus. The driver has enough RAM for eight separate frames of display memory, so multiple frames of an animation can be loaded and displayed with a single command. Additionally, the IS31FL3731 has the ability to modulate LED frames from a connected audio signal.

This chip is ideal for small LED displays, and Adafruit has designed the driver breakout to match up with their ready-to-go LED grids in red, yellow, green, blue, warm white, and cool white. Easily combine the driver breakout board with any of Adafruit’s recommended 9 x 16 LED matrix boards, or control any matrix meeting the specifications in the IS31FL3731 datasheet.

Please note this driver board does not come with any LEDs; recommended LED matrices are sold separately.

Features
  • Supply voltage range: 2.7 V to 5.5 V
  • 400 kHz, I²C-compatible interface
  • Control 144 LEDs in dot matrix
  • Individual blink control
  • Eight frames of memory for animations
  • Picture mode and animation mode
  • Auto intensity breathing during the switching of different frames
  • LED frames displayed can be modulated with audio signal intensity
  • LED light intensity can be modulated with audio signal intensity
  • Compatible with Adafruit-supported Arduino libraries

Main LED Driver Breakout Board

ImageManufacturer Part NumberDescriptionVoltage - OutputFeaturesAvailable QuantityView Details
ADAFRUIT 16X9 CHARLIEPLEXED PWM2946ADAFRUIT 16X9 CHARLIEPLEXED PWM-I²C86 - ImmediateView Details

Recommended LED Matrices

ImageManufacturer Part NumberColorAvailable QuantityView Details
29732973Blue25 - ImmediateView Details
29482948Yellow2 - ImmediateView Details
29472947Red8 - ImmediateView Details
29722972Green2 - ImmediateView Details
29742974White52 - ImmediateView Details

Utilized Chipset

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC LED DRIVER LIN DIM 34MA 28QFNIS31FL3731-QFLS2-TRIC LED DRIVER LIN DIM 34MA 28QFN0View Details
IC LED DVR 144DOT AUD MOD 28SSOPIS31FL3731-SALS2IC LED DVR 144DOT AUD MOD 28SSOP640 - ImmediateView Details
IC LED DVR 144DOT AUD MOD 28QFNIS31FL3731C-QFLS2-TRIC LED DVR 144DOT AUD MOD 28QFN0View Details
Published: 2016-10-18