Automotive bus controlled 16-channel LED sink driver

The TLC59116-Q1, from Texas Instruments, is an I2C-Bus controlled 16-channel LED driver that is optimized for red/green/blue/amber (RGBA) colour mixing and backlight application. Each LED output has its own 8-bit resolution (256 steps) fixed-frequency individual PWM controller that operates at 97kHz, with a duty cycle that is adjustable from 0% to 99.6%. The individual PWM controller allows each LED to be set to a specific brightness value. An additional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of 190Hz and an adjustable frequency between 24Hz to once every 10.73 seconds. The group controller dims or blinks all LEDs with the same value. Each LED output can be off, on, or set at its individual value at both individual and group controller values. The device operates with a supply voltage range of 3V to 5.5V and the outputs are 17V tolerant. LEDs can be directly connected to the device outputs. Software programmable LED group and three sub call I2C-Bus addresses allow all or defined groups of devices to respond to a common Bus address, allowing for example, all the same colour LEDs to be turned on or off at the same time or marquee chasing effect, thus minimizing I2C Bus commands. Four hardware address pins allow up to 14 devices on the same Bus. The software reset call allows the master to perform a reset of the device through the I2C Bus, identical to the power-on reset that initializes the registers to their default state causing the outputs to be set high (LED off). This allows an easy and quick way to reconfigure all device registers to the same condition.