TLC5944 LED Drivers Texas Instruments TLC5944 LED drivers feature 16 individually adjustable channels containing 4,096 pulse-width modulated steps with maximum current values set via a single external resistor. The devices feature 64 constant sink current (dot correction) steps that adjust for brightness variations between LEDs and can be accessed via a common serial interface port. The TLC5944 devices use an internal pre-charge FET to prevent ghost lighting on multiplexed LED systems.