TLC59108 Datasheet, PDF (1/31 Pages) Texas Instruments – 8-BIT Fm+ I2C-BUS CONSTANT-CURRENT LED SINK DRIVER

TLC59108
www.ti.com .................................................................................................................................................................................................. SLDS156 – MARCH 2009
8-BIT Fm+ I²C-BUS CONSTANT-CURRENT LED SINK DRIVER
FEATURES
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•2 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 That One-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
• Active-Low Reset
• 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
• –40°C to 85°C Operation
DESCRIPTION/ORDERING INFORMATION
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 adjustable from 0%
to 99.6%. The group PWM controller dims or blinks all LEDs with the same value.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated