SLVS796I September   2008  – March 2016 TPD2E007

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 ESD Ratings: Surge Protection
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Electrical Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 IEC 61000-4-2 Level 4 ESD Protection
      2. 7.3.2 IEC 61000-4-5 Surge Protection
      3. 7.3.3 IO Capacitance
      4. 7.3.4 Low 50-nA Leakage Current
      5. 7.3.5 Space-Saving PicoStar and SOT Package
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Signal Range on IO1 and IO2 Pins
        2. 8.2.2.2 Surge Withstand
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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8 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.

8.1 Application Information

TPD2E007 is a diode type TVS which is typically used to provide a path to ground for dissipating ESD events on signal lines between a human interface connector and a system. As the current from ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage presented to the protected IC.

8.2 Typical Application

TPD2E007 RS232-Surge-Diagram.gif Figure 6. Example Schematic

8.2.1 Design Requirements

For this design example, a single TPD2E007 is used to protect an RS232 3-wire connector.

Given the application, the following parameters are known.

Table 1. Design Parameters

DESIGN PARAMETER VALUE
Signal range on all pins except GND –12 V to 12 V
Surge Withstand - IEC 61000-4-5 150 W

8.2.2 Detailed Design Procedure

To begin the design process, some parameters must be decided upon; the designer needs to know the following:

  • Signal voltage range on all protected lines
  • Surge Withstand

8.2.2.1 Signal Range on IO1 and IO2 Pins

The TPD2E007 has 2 IO pins which can support up to ±13 V.

8.2.2.2 Surge Withstand

The TPD2E007 can withstand up to 170W of IEC 61000-4-5 8/20-µs surge.

8.2.3 Application Curve

TPD2E007 C014_SLVS796.png Figure 7. Surge Pulse Waveform