SBVS127E March   2009  – July 2017 TLC5951

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 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Pin Equivalent Input and Output Schematic Diagrams
    2. 8.2 Test Circuits
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Thermal-Shutdown and Thermal-Error Flags
      2. 9.3.2 Noise Reduction
    4. 9.4 Device Functional Modes
      1. 9.4.1 Maximum Constant Sink-Current Value
      2. 9.4.2 Dot Correction (DC) Function
      3. 9.4.3 Global Brightness Control (BC) Function
      4. 9.4.4 Grayscale (GS) Function (PWM Control)
        1. 9.4.4.1 PWM Counter 12-Bit Mode Without Auto Repeat
        2. 9.4.4.2 PWM Counter 8-, 10-, or 12-Bit Mode Without Auto Repeat
        3. 9.4.4.3 PWM Counter 8-, 10-, or 12-Bit Mode With Auto Repeat
      5. 9.4.5 Register and Data Latch Configuration
        1. 9.4.5.1 288-Bit Common Shift Register
        2. 9.4.5.2 Grayscale Data Latch
        3. 9.4.5.3 DC, BC, FC, and UD Shift Register
          1. 9.4.5.3.1 DC, BC, FC, and UD Data Latch
          2. 9.4.5.3.2 Dot-Correction Data Latch
          3. 9.4.5.3.3 Global-Brightness Control-Data Latch
          4. 9.4.5.3.4 Function-Control Data Latch
          5. 9.4.5.3.5 User-Defined Data Latch
      6. 9.4.6 Status Information Data (SID)
      7. 9.4.7 Continuous Base LOD, LSD, and TEF
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Community Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 24-Channel Constant-Current Sink Output
  • Current Capability: 40 mA
  • Selectable Grayscale (GS) Control With PWM:
    12-Bit (4096 Step), 10-Bit (1024 Step), 8-Bit (256 Step)
  • Three Independent Grayscale Clocks for Three Color Groups
  • Dot Correction (DC): 7-Bit (128 Step)
  • Global Brightness Control (BC) for Each Color Group: 8-Bit (256 Step)
  • Auto Display Repeat Function
  • Independent Data Port for GS and BC and DC Data
  • Communication Path Between Each Data Port
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±1.5%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • Data Transfer Rate: 30 MHz
  • 33-MHz Grayscale Control Clock
  • Continuous Base LED-Open Detection (LOD)
  • Continuous Base LED-Short Detection (LSD)
  • Thermal Shutdown (TSD) With Auto Restart
  • Grouped Delay to Prevent Inrush Current
  • Operating Ambient Temperature: –40°C to 85°C
  • Packages: HTSSOP-38, QFN-40

2 Applications

  • Full-Color LED Displays
  • LED Signboards

3 Description

The TLC5951 device is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable, 4096-step, pulse-width modulation (PWM) grayscale (GS) brightness control and 128-step constant-current dot correction (DC). The dot correction adjusts brightness deviation between channels and other LED drivers. The output channels are grouped into three groups of eight channels. Each channel group has a 256-step global brightness control (BC) function and an individual grayscale clock input.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TLC5951 HTSSOP (38) 12.50 mm × 6.20 mm
VQFN (40) 6.00 × 6.00 mm
WQFN (40) 6.00 × 6.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit (Multiple Daisy-Chained TLC5951 Devices)

TLC5951 pg1_fig_bvs127.gif