SLVS677C July 2008  – October 2015 TLC5926 , TLC5927

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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: VDD = 3 V
    6. 7.6 Electrical Characteristics: VDD = 5.5 V
    7. 7.7 Timing Recommendations
    8. 7.8 Switching Characteristics: VDD = 3 V
    9. 7.9 Switching Characteristics: VDD = 5.5 V
    10. 7.10Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1Overview
    2. 9.2Functional Block Diagram
    3. 9.3Feature Description
      1. 9.3.1Open-Circuit Detection Principle
      2. 9.3.2Short-Circuit Detection Principle (TLC5927 Only)
      3. 9.3.3Overtemperature Detection and Shutdown
    4. 9.4Device Functional Modes
      1. 9.4.1Operation Mode Switching
      2. 9.4.2Normal Mode Phase
      3. 9.4.3Special Mode Phase
        1. 9.4.3.1Reading Error Status Code in Special Mode
      4. 9.4.4Writing Configuration Code in Special Mode
  10. 10Application and Implementation
    1. 10.1Application Information
      1. 10.1.1Constant Current
      2. 10.1.2Adjusting Output Current
      3. 10.1.316-Bit Configuration Code and Current Gain
    2. 10.2Typical Application
      1. 10.2.1Design Requirements
      2. 10.2.2Detailed Design Procedure
      3. 10.2.3Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1Layout Guidelines
    2. 12.2Layout Example
  13. 13Device and Documentation Support
    1. 13.1Related Links
    2. 13.2Community Resources
    3. 13.3Trademarks
    4. 13.4Electrostatic Discharge Caution
    5. 13.5Glossary
  14. 14Mechanical, Packaging, and Orderable Information

1 Features

  • 16 Constant-Current Output Channels
  • Output Current Adjusted By External Resistor
  • Constant Output Current Range: 5 mA to 120 mA
  • Constant Output Current Invariant to Load Voltage Change
  • Open-Load and Shorted-Load Detection
  • 256-Step Programmable Global Current Gain
  • Excellent Output Current Accuracy:
    • Between Channels: < ±6% (Max), 10 mA to 50 mA
    • Between ICs: < ±6% (Max), 10 mA to 50 mA
  • 30-MHz Maximum Clock Frequency
  • Schmitt-Trigger Input
  • 3.3-V or 5-V Supply Voltage
  • Thermal Shutdown for Overtemperature Protection

2 Applications

  • General LED Lighting Applications
  • LED Display Systems
  • LED Signage
  • Automotive LED Lighting
  • White Goods

3 Description

The TLC592x is designed for LED displays and LED lighting applications with open-load, shorted-load, and over temperature detection, and constant-current control. The TLC592x contains a 16-bit shift register and data latches, which convert serial input data into parallel output format. At the TLC592x output stage, 16 regulated-current ports provide uniform and constant current for driving LEDs within a wide range of VF (forward voltage) variations. Used in systems designed for LED display applications (for example, LED panels), TLC592x provides great flexibility and device performance. Users can adjust the output current from 5 mA to 120 mA through an external resistor, Rext, which gives flexibility in controlling the light intensity of LEDs. The TLC592x is designed for up to 17 V at the output port. The high clock frequency, 30 MHz, also satisfies the system requirements of high-volume data transmission.

Device Information (1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TLC5926SSOP (24)8.65 mm × 3.90 mm
SOIC (24)15.40 mm × 7.50 mm
HTSSOP (24)7.80 mm × 4.40 mm
TLC5927SSOP (24)8.65 mm × 3.90 mm
SOIC (24)15.40 mm × 7.50 mm
HTSSOP (24)7.80 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Single Implementation of TLC592x Device

TLC5926 TLC5927 typapp_singledev_lvs677.gif