SLVS984B September   2009  – March 2015 TPS22946

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 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 Detection Schemes
        1. 8.3.1.1 Overtemperature Detection
        2. 8.3.1.2 Hard-Short Detection
        3. 8.3.1.3 Moderate Overcurrent Detection
        4. 8.3.1.4 Current Limiting Mode
        5. 8.3.1.5 Fault Reporting
        6. 8.3.1.6 Power-On and Power-Off Sequence
        7. 8.3.1.7 Automatic Disable in Case of Permanent Overcurrent
      2. 8.3.2 Inrush Current Time-out Feature
      3. 8.3.3 CL Control Pin
      4. 8.3.4 Overtemperature Protection
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 On/Off Control
    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 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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11 Layout

11.1 Layout Guidelines

  • The CIN capacitor should be placed as close as possible to the VIN pin.
  • The VIN and VOUT traces should be the appropriate width to carry the load current.
  • The CL pin may be connected directly the GND or VIN (depending on the desired current limit). The CL pin may also be left floating.

11.2 Layout Example

TPS22946 Layout.gifFigure 36. Layout Example