The TLC59208F is an I2C bus controlled 8-bit LED driver
optimized for red/green/blue/amber (RGBA) color mixing applications. Each LED output has its own
8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 97 kHz with
a duty cycle that is adjustable from 0% to 99.6% to allow the 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 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a
duty cycle that is adjustable from 0% to 99.6% that is used to either dim or blink all LEDs with
the same value.
Each LED output can be off, on (no PWM control), set at its individual PWM controller
value or at both individual and group PWM controller values. The TLC59208F operates with a supply
voltage range of 3 V to 5.5 V and the outputs are 17 V tolerant. LEDs can be directly connected to
the TLC59208F device outputs.
Software programmable LED Group and three Sub Call I2C bus
addresses allow all or defined groups of TLC59208F devices to respond to a common
I2C bus address, allowing for example, all the same color LEDs to be
turned on or off at the same time or marquee chasing effect, thus minimizing
I2C bus commands.
Three hardware address pins allow up to 64 devices on the same bus.
The software reset (SWRST) Call allows the master to perform a reset of the TLC59208F
through the I2C bus, identical to the power-on reset (POR) 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.
