1 Introduction
1.1 Features
The TLC6984 is a highly integrated, common cathode matrix LED display driver with 48 constant current
sources and 16 scanning FETs. One TLC6984 is capable of driving 16 × 16 RGB LED pixels, while stacking
two TLC6984s can drive 32 × 32 RGB LED pixels, three TLC6984s are capable of driving 48 × 48 RGB LED
pixels, and stacking four TLC6984s can drive 64 × 64 RGB LED pixels. To achieve low power consumption, the
device supports separated power supplies for the red, green, and blue LEDs by its common cathode structure.
Furthermore, the operation power of the TLC6984 is significantly reduced by ultra-low operation voltage range
(Vcc down to 2.5 V) and ultra-low operation current (Icc down to 3.6 mA).
The TLC6984 implements a high speed, dual-edge transmission interface to support high device count daisy-
chained and high refresh rate while minimizing electrical-magnetic interference (EMI). The device supports up
to 25-MHz SCLK (external) and up to 160-MHz GCLK (internal). Meanwhile, the device integrates enhanced
circuits and intelligent algorithms to solve the various display challenges in Narrow Pixel Pitch (NPP) LED
display applications and mini and micro-LED products. The display challenges are dim at the fist scan line, upper
and downside ghosting, non-uniformity in low gray scale, coupling, caterpillar caused by open or short LEDs,
which make the TLC6984 a perfect choice in such applications.
The TLC6984 also implements LED open and weak, short and short detections and removals during operations
and can also report this information out to the accompanying digital processor.
1.2 Applications
The TLC6984 EVM can be used as a basic function evaluation module for the following applications:
• Narrow Pixel Pitch (NPP) LED display
• Mini and micro-LED products
Introduction
2
TLC6984 48 × 16 Common Cathode Matrix LED Display Driver Evaluation
Module
SLVUCB5 – OCTOBER 2021
Copyright © 2021 Texas Instruments Incorporated
