SBVS146D August   2010  – December 2015 TLC5971

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 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Dissipation Ratings
    8. 6.8 Typical Characteristics
  7. 7 Parametric Measurement Information
    1. 7.1 Test Circuits
    2. 7.2 Pin Equivalent Input and Output Schematics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Auto Display Repeat Function
      2. 8.3.2 Display Timing Reset Function
      3. 8.3.3 Output Timing Select Function
      4. 8.3.4 Thermal Shutdown
      5. 8.3.5 Noise Reduction
    4. 8.4 Device Functional Modes
      1. 8.4.1 Maximum Constant Sink Current Setting
    5. 8.5 Programming
      1. 8.5.1 Global Brightness Control (BC) Function (Sink Current Control)
      2. 8.5.2 Grayscale (GS) Function (PWM Control)
      3. 8.5.3 Enhanced Spectrum (ES) PWM Control
      4. 8.5.4 Register and Data Latch Configuration
        1. 8.5.4.1 224-Bit Shift Register
        2. 8.5.4.2 218-Bit Data Latch
      5. 8.5.5 Internal Latch Pulse Generation Timing
  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 Data Input Sequence
        3. 9.2.2.3 How to Control the TLC5971
          1. 9.2.2.3.1 Data Write and PWM Control with Internal Grayscale Clock Mode
          2. 9.2.2.3.2 Data Write and PWM Control with External Grayscale Clock Mode
      3. 9.2.3 Application Curve
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

PWP Package
20-Pin HTSSOP
Bottom View
TLC5971 po_pwp_bvs146.gif
RGE Package
24-Pin VQFN
Bottom View
TLC5971 po_rge_bvs146.gif
NC = not connected

Pin Functions

PIN I/O DESCRIPTION
NAME PWP RGE
SDTI 9 1 I Serial data input for the 224-bit shift register
SCKI 10 2 I Serial data shift clock input.
Data present on SDTI are shifted to the LSB of the 224-bit shift register with the SCKI rising edge Data in the shift register are shifted toward the MSB at each SCKI rising edge.
The MSB data of the shift register appear on SDTO.
SDTO 12 6 O Serial data output of the 224-bit shift register.
SDTO is connected to the MSB of the 224-bit shift register.
Data are clocked out at the SCKI rising edge.
SCKO 11 5 O Serial data shift clock output.
The input shift clock signal from SCKI is adjusted to the timing of the serial data output for SDTO and the signal is then output at SCKO.
VREG 20 15 I/O Internal linear voltage regulator output.
A decoupling capacitor of 1 µF must be connected. This output can be used for external devices as a 3.3-V power supply. This terminal can be connected with the VREG terminal of other devices to increase the supply current. Also, this pin can be supplied with 3 V to 5.5 V from an external power supply by connecting it to VCC.
IREF 1 16 I/O Maximum current programming terminal.
A resistor connected between IREF and GND sets the maximum current for every constant-current output. When this terminal is directly connected to GND, all outputs are forced off. The external resistor should be placed close to the device.
OUTR0 3 19 O RED constant-current outputs.
Multiple outputs can be configured in parallel to increase the constant-current capability.
Different voltages can be applied to each output.
OUTR1 6 22 O
OUTR2 13 7 O
OUTR3 16 10 O
OUTG0 4 20 O GREEN constant-current outputs.
Multiple outputs can be configured in parallel to increase the constant-current capability.
Different voltages can be applied to each output.
OUTG1 7 23 O
OUTG2 14 8 O
OUTG3 17 11 O
OUTB0 5 21 O BLUE constant-current outputs.
Multiple outputs can be configured in parallel to increase the constant-current capability.
Different voltages can be applied to each output.
OUTB1 8 24 O
OUTB2 15 9 O
OUTB3 18 12 O
VCC 19 13 — Power-supply terminal
GND, PowerPAD (PWP) 2 — — Power ground terminal
GND, exposed thermal pad (RGE) — 18 —
NC — 3, 4, 14, 17 — No internal connection