SLIS142D December   2012  – September 2016 TLC6C598-Q1

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 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Timing Waveforms
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Thermal Shutdown
      2. 8.3.2 Serial-In Interface
      3. 8.3.3 Clear Registers
      4. 8.3.4 Output Channels
      5. 8.3.5 Register Clock
      6. 8.3.6 Cascade Through SER OUT
      7. 8.3.7 Output Control
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation With VCC < 3 V
      2. 8.4.2 Operation With 5.5 V ≤ VCC ≤ 8 V
  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
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Option Addendum
      1. 13.1.1 Packaging Information
      2. 13.1.2 Tape and Reel Information

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9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

9.1 Application Information

The TLC6C598-Q1 device is a serial-in, parallel-out, power and logic, 8-bit shift register with low-side open-drain DMOS output ratings of 40-V and 50-mA continuous sink-current capabilities when VCC = 5 V. The device is designed to drive resistive loads and is particularly well-suited as an interface between a microcontroller and LEDs or lamps. The device also provides up to 2000 V of ESD protection when tested using the human body model and 200 V when using the machine model

9.2 Typical Application

Figure 14 shows a typical cascade application circuit with two TLC6C598-Q1 chips configured in cascade topology. The MCU generates all the input signals.

TLC6C598-Q1 Typ_App_Circuit_SLIS142.gif Figure 14. Typical Application Circuit

9.2.1 Design Requirements

DESIGN PARAMETER EXAMPLE VALUE
VBattery 9 V to 40 V
VCC_1 3.3 V
I(D0), I(D1), I(D2), I(D3) , I(D4), I(D5), I(D6), I(D7) 30 mA
VCC_2 5 V
I(D8), I(D9), I(D10), I(D11) , I(D12), I(D13), I(D14), I(D15) 50 mA

9.2.2 Detailed Design Procedure

To begin the design process, the designer must decide on a few parameters, as follows:

  • Vsupply: LED supply voltage
  • VDx: LED forward voltage
  • I: LED current

With these parameters determined, the resistor in series with the LED can be calculated by using the following equation:

Equation 1. TLC6C598-Q1 Eq01-Rx_SLIS142.gif

9.2.3 Application Curve

TLC6C598-Q1 app-curve_SLIS142.gif Figure 15. TLC6C598-Q1 Application Waveform
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