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8-Bit Fast Mode Plus (FM+) I2C Bus Constant-Current LED Sink Driver


Package | PIN: RGY | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.78
10-24 $1.59
25-99 $1.48
100-249 $1.29
250-499 $1.19
500-749 $1.00
750-999 $0.82
1000+ $0.75


  • Eight LED Drivers (Each Output Programmable At
    Off, On, Programmable LED Brightness,
    Programmable Group Dimming/Blinking Mixed
    With Individual LED Brightness
  • Eight Constant-Current 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
  • 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)
  • Constant Output Current Adjusted Through an
    External Resistor (10mA to 120mA)
  • Maximum Output Voltage: 17 V
  • 25-MHz Internal Oscillator Requires No External
  • 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
  • 3.3-V or 5-V Supply Voltage

Texas Instruments  TLC59108IRGYR

The TLC59108 is an I2C bus controlled 8-bit LED driver that is optimized for red/green/blue/amber (RGBA) color mixing and backlight 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%. 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.

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.

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.