The TLC59108 is an I2C bus controlled 8-bit LED driver that is optimized for red/green/blue/amber (RGBA) color mixing and backlight application for amusement products. 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%. 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 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds, with a duty cycle that is adjustablefrom 0% to 99.6%. The group PWM controller dims or blinks all LEDs with the same value.
Each LED output can be off, on (no PWM control), or set at its individual PWM controller value at both individual and group PWM controller values.
The TLC59108 is one of the first LED controller devices in a new Fast-mode Plus (Fm+) family. Fm+ devices offer higher frequency (up to 1 MHz) and longer, more densely populated bus operation (up to 4000 pF).
Software programmable LED group and three Sub Call I2C bus addresses allow all or defined groups of TLC59108 devices to respond to a common I2C bus address, allowing for example, all red 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 (SWRST) call allows the master to perform a reset of the TLC59108 through the I2C bus, identical to the Power-On Reset (POR) that initializes theregisters 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.
Eight LED Drivers (Each Output Programmable At Off, On, Programmable LED Brightness, Programmable Group Dimming/Blinking Mixed With Individual LED Brightness
Eight Constant-Current Open-Drain Output Channels
256-Step (8-Bit) Linear Programmable Brightness Per LED Output Varying From Fully Off (Default) to Maximum Brightness Using a 97-kHz PWM Signal
256-Step Group Brightness Control Allows General Dimming (Using a 190-Hz PWM Signal From Fully Off to Maximum Brightness (Default)
256-Step Group Blinking With Frequency Programmable From 24 Hz to 10.73 s and Duty Cycle From 0% to 99.6%
Four Hardware Address Pins Allow 14 TLC59108 Devices to be Connected to the Same I2C Bus
Four Software-Programmable I2C Bus Addresses(One LED Group Call Address and Three LED Sub Call Addresses) Allow Groups of Devices to be Addressed at the Same Time in Any Combination. For Example, One Register Used for All Call, so That All the TLC59108 Devices on the I2C Bus Can be Addressed at the Same Time, and the Second Register Can be Used for Three Different Addresses so ThatOne-Third of All Devices on the Bus Can be Addressed at the Same Time in a Group.
Software Enable and Disable for I2C Bus Address
Software Reset Feature (SWRST Call) Allows Device to be Reset Through I2C Bus
Up to 14 Possible Hardware-Adjustable Individual I2C Bus Addresses Per Device, So That Each Device Can Be Programmed
Open-Load/Overtemperature Detection Mode to Detect Individual LED Errors
Output State Change Programmable on the Acknowledge or the Stop Command to Update Outputs Byte by Byte or All at the Same Time (Default to Change on Stop)
Output Current Adjusted Through an External Resistor
Constant Output Current Range: 10 mA to 120 mA
Maximum Output Voltage: 17 V
25-MHz Internal Oscillator Requires No External Components
1-MHz Fast Mode Plus Compatible I2C Bus Interface With 30-mA High Drive Capability on SDA Output for Driving High-Capacitive Buses
Internal Power-On Reset
Noise Filter on SCL/SDA Inputs
No Glitch on Power Up
Supports Hot Insertion
Low Standby Current
3.3-V or 5-V Supply Voltage
5.5-V Tolerant Inputs
Offered in 20-Pin TSSOP (PW) and QFN (RGY) Packages