SBVS129A May   2009  – July 2018 TLC5952

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Circuit (Multiple Daisy-Chained TLC5952s)
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 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 Maximum Constant-Sink-Current Value
      2. 8.3.2 Global Brightness Control (BC) Function: Sink-Current Control
      3. 8.3.3 Constant-Current Output On-Off Control
    4. 8.4 Device Functional Modes
      1. 8.4.1 LOD, LSD, and TEF Operation
      2. 8.4.2 Register and Data Latch Configuration
        1. 8.4.2.1 Output On-Off Data Latch
        2. 8.4.2.2 Control-Data Latch
        3. 8.4.2.3 Status Information Data (SID)
        4. 8.4.2.4 LED-Open Detection (LOD), LED-Short Detection (LSD), And Thermal Error Flag (TEF)
        5. 8.4.2.5 Thermal Shutdown (TSD)
        6. 8.4.2.6 Noise Reduction
  9. 9 Power Supply Recommendations
  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

8.3.3 Constant-Current Output On-Off Control

When BLANK is low, each output is controlled by the data in the output on-off data latch. When data corresponding to an output are equal to 1, the output turns on; when the data corresponding to an output are equal to 0, the output turns off. When BLANK is high, all outputs are forced off.

When the device is powered on, the data in the output on-off data latch are not set to any default values. Therefore, on-off data must be written to the output on-off data latch before turning on the constant-current output and pulling BLANK low.

If there are any OUTRn, -Gn, -Bn outputs not connected to an LED, including open for short-to-ground failures, the on-off data corresponding to the unconnected output should be set to 0 before the LED is turned on. Otherwise, the VCC supply current (ICC) increases while the LEDs are on. A truth table for the on-off control data is shown in Table 3.

Table 3. On-Off Control-Data Truth Table

ON-OFF CONTROL DATA CONSTANT-CURRENT OUTPUT STATUS
0 Off
1 On