TITLC5940PW
Overview
The TLC5940PW is a 16-channel constant-current sink LED driver that provides high-resolution 12-bit PWM grayscale control for each channel. It features a 30 MHz serial data interface and integrated 6-bit dot correction for adjusting the brightness of individual LEDs to ensure uniform display quality. The device also includes integrated EEPROM for storing calibration data and diagnostic flags for thermal errors and open LED detection.
Why Choose This Part
The combination of 12-bit PWM for smooth dimming and 6-bit dot correction for pixel-level calibration makes it ideal for high-quality visual applications. Its ability to sink up to 120mA per channel while operating on a wide 3V to 5.5V supply range provides significant flexibility for driving various LED configurations.
Applications
Key Specifications
Getting Started
To begin development, connect the TLC5940 to a microcontroller using its four-wire serial interface (SCLK, SIN, BLANK, and XLAT). Use an external resistor at the IREF pin to set the maximum current limit, and leverage available libraries for Arduino or ARM-based platforms to manage the bit-banging or SPI-based data transfer required for the 192-bit data frame.
Also Consider
NXP Semiconductors
- Uses an I2C interface instead of a high-speed serial bus, which is easier to implement for lower-speed lighting control applications.
