16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control

Courtesy/Thanks to: Texas Instruments

Description: The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible via a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information ircuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.


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tlc5940_pinout.jpg Pinout for the TLC5940
tlc5940.pdf Datasheet for the TLC5940.
Links TLC5940 Library for the Arduino
Texas Instruments IC Components manufacturer