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1 Features

1? Eight LED Drivers (Each Output Programmable at

OFF, ON, Programmable LED Brightness,

Programmable Group Dimming and Blinking

Mixed With Individual LED Brightness)

? Eight 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 Software Programmable I2C Bus Addresses

(One LED Group Call Address and Three LED

Sub Call Addresses) Allow Groups of Devices to

be Simultaneously Addressed Any Combination

(For Example, One Register Used for All Call so

That All the TLC59108Fs on the I2C Bus Can be

Simultaneously Addressed and the Second

Register Used for Three Different Addresses so

That One Third of All Devices on the Bus Can be

Simultaneously Addressed)

? Software Enable and Disable for I2C Bus Address

? Software Reset Feature (SWRST Call) Allows the

Device to be Reset Through the I2C Bus

? Up to 14 Hardware Selectable I2C Bus Addresses

so That Each Device Can be Programmed

Individually

? 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)

? Maximum Output Current: 120 mA

? Maximum Output Voltage: 17 V

? 25-MHz Internal Oscillator Requires No External

Components

? 1-MHz Fast-Mode Plus (FM+) 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

? Active-Low Reset (RESET)

? Supports Hot Insertion

2 Applications

? Gaming

? Small Signage

? Industrial Equipment

3 Description

The TLC59108F device is an I2C bus controlled 8-bit

LED driver optimized for red, green, blue, or 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

TLC59108F 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 TLC59108F device outputs.