SLDS156B March   2009  – July 2015 TLC59108

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Open-Circuit Detection
      2. 9.3.2 Overtemperature Detection and Shutdown
      3. 9.3.3 Power-On Reset
      4. 9.3.4 External Reset
      5. 9.3.5 Software Reset
      6. 9.3.6 Individual Brightness Control With Group Dimming/Blinking
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 Characteristics of the I2C Bus
        1. 9.5.1.1 Bit Transfer
        2. 9.5.1.2 Start and Stop Conditions
      2. 9.5.2 System Configuration
      3. 9.5.3 Acknowledge
      4. 9.5.4 Device Address
      5. 9.5.5 Regular I2C Bus Slave Address
      6. 9.5.6 LED All Call I2C Bus Address
      7. 9.5.7 LED Sub Call I2C Bus Address
      8. 9.5.8 Software Reset I2C Bus Address
      9. 9.5.9 Control Register
    6. 9.6 Register Maps
      1. 9.6.1 Register Descriptions
        1. 9.6.1.1  Mode Register 1 (MODE1)
        2. 9.6.1.2  Mode Register 2 (MODE2)
        3. 9.6.1.3  Brightness Control Registers 0 to 7 (PWM0 to PWM7)
        4. 9.6.1.4  Group Duty Cycle Control Register (GRPPWM)
        5. 9.6.1.5  Group Frequency Register (GRPFREQ)
        6. 9.6.1.6  LED Driver Output State Registers (LEDOUT0, LEDOUT1)
        7. 9.6.1.7  I2C Bus Subaddress Registers 1 to 3 (SUBADR1 to SUBADR3)
        8. 9.6.1.8  LED All Call I2C Bus Address Register (ALLCALLADR)
        9. 9.6.1.9  Output Gain Control Register (IREF)
        10. 9.6.1.10 Error Flags Registers (EFLAG)
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Driver Output
        1. 10.1.1.1 Constant Current Output
        2. 10.1.1.2 Adjusting Output Current
      2. 10.1.2 TLC59108 and TLC59108F Differences
    2. 10.2 Typical Application
      1. 10.2.1 Parallel Outputs
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curve
      2. 10.2.2 Multiple Devices
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 Community Resources
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

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5 Description (continued)

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.