SBVS114B July   2008  – January 2015 TLC5947

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Dissipation Ratings
    6. 6.6 Electrical Characteristics
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Pin Equivalent Input and Output Schematic Diagrams
    2. 7.2 Test Circuits
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Grayscale (GS) Control Function
      2. 8.3.2 Auto Display Repeat Function
      3. 8.3.3 Thermal Shutdown (TSD)
      4. 8.3.4 Noise Reduction
    4. 8.4 Programming
      1. 8.4.1 Register Configuration
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Define Basic Parameters
        2. 9.2.2.2 Grayscale (GS) Data
        3. 9.2.2.3 Auto-Display Function
        4. 9.2.2.4 Setting for the Constant Sink Current Value
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Power Dissipation
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

10 Power Supply Recommendations

The VCC power supply voltage should be decoupled by placing a 0.1-µF ceramic capacitor close to the VCC pin and GND plane. Depending on the panel size, several electrolytic capacitors must be placed on the board equally distributed to get a well regulated LED supply voltage (VLED). The VLED voltage ripple must be less than 5% of its nominal value. Furthermore, the VLED must be set to the voltage calculated by Equation 3:

Equation 3. VLED > VF + 0.4 V (10-mA constant-current example)

where

  • VF = maximum forward voltage of all LEDs.