SLVS973A September   2009  – July 2015 TLC5926-Q1 , TLC5927-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  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: VDD = 3 V
    6. 7.6  Electrical Characteristics: VDD = 5.5 V
    7. 7.7  Timing Requirements
    8. 7.8  Switching Characteristics: VDD = 3 V
    9. 7.9  Switching Characteristics: VDD = 5.5 V
    10. 7.10 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 Principle
      2. 9.3.2 Short-Circuit Detection Principle (TLC5927-Q1 Only)
      3. 9.3.3 Overtemperature Detection and Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation Mode Switching
      2. 9.4.2 Normal Mode Phase
      3. 9.4.3 Special Mode Phase
        1. 9.4.3.1 Reading Error Status Code in Special Mode
        2. 9.4.3.2 Writing Configuration Code in Special Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Constant Current
      2. 10.1.2 Adjusting Output Current
      3. 10.1.3 16-Bit Configuration Code and Current Gain
    2. 10.2 Typical Applications
      1. 10.2.1 Single Implementation of TLC5926/TLC5927-Q1 Device
        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 Cascading Implementation of TLC5926/ TLC5927-Q1 Device
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
  • 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, Shorted Load, and Overtemperature Detection
  • 256-Step Programmable Global Current Gain
  • Excellent Output Current Accuracy:
    • Between Channels: < ±6% (Maximum), 10 mA to 50 mA
    • Between ICs: < ±6% (Maximum), 10 mA to 50 mA
  • 30-MHz Clock Frequency
  • Schmitt-Trigger Input
  • 3.3-V or 5-V Supply Voltage
  • Thermal Shutdown for Overtemperature Protection
  • ESD Performance: 2-kV HBM

2 Applications

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

3 Description

The TLC592x-Q1 Constant-Current LED Sink Drivers is designed to work alone or cascaded. Because each output is independently controlled, they can be programmed to be on or off by the user. The high LED voltage (VLED) allows for the use of a single LED per output or multiple LEDs on a single string. With independently controlled outputs supplied with constant current, the LEDs can be combined in parallel to create higher currents on a single string. The constant sink current for all channels is set through a single external resistor. This allows different LED drivers in the same application to sink various currents which provides optional implementation of multi-color LEDs. An additional advantage of the independent outputs is the ability to leave unused channels floating. The flexibility of the TLC592x-Q1 LED driver is ideal for applications such as (but not limited to): automotive LED lighting, 7-segment displays, scrolling single color displays, gaming machines, white goods, video billboards and video panels.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TLC5926-Q1 HTSSOP (24) 7.80 mm × 4.40 mm
TLC5927-Q1
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TLC5926-Q1 TLC5927-Q1 bd_key_gfx_slvs973.gif