TITLC5940PWPR

Overview

The TLC5940PWPR is a 16-channel constant-current sink LED driver featuring 12-bit grayscale PWM control and 6-bit dot correction for each channel. It communicates via a high-speed 30 MHz serial interface, allowing for precise brightness management and uniformity across large LED arrays. The integrated EEPROM stores dot correction data to maintain consistent performance across multiple power cycles.

Why Choose This Part

The device offers a high 12-bit PWM resolution which eliminates flickering and allows for very fine brightness adjustments. Its 6-bit dot correction compensates for brightness variations between individual LEDs, ensuring uniform display output. Integrated diagnostic features like LED Open Detection and Thermal Error Flags enhance system reliability in professional lighting installations.

Applications

Getting Started

To evaluate this IC, interface it with a microcontroller using the serial data interface; many libraries exist for the Arduino and STM32 ecosystems to handle the grayscale and dot correction data. Ensure the thermal pad on the HTSSOP package is properly soldered to a PCB ground plane to manage heat dissipation when sinking high currents. Set the maximum output current by selecting an appropriate reference resistor (RIREF) to match your LED specifications.

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