SLUS907K January   2009  – June 2019 TPS2421-1 , TPS2421-2

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Typical Application
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 CT
      2. 8.3.2 FLT
      3. 8.3.3 GND
      4. 8.3.4 ISET
      5. 8.3.5 VIN
      6. 8.3.6 VOUT
      7. 8.3.7 PG
    4. 8.4 Device Functional Modes
      1. 8.4.1 Startup
      2. 8.4.2 Maximum Allowable Load to Ensure Successful Startup
        1. 8.4.2.1 Enable Pin Considerations
        2. 8.4.2.2 Fault Timer
        3. 8.4.2.3 Normal Operation
        4. 8.4.2.4 Startup into a Short
      3. 8.4.3 Shutdown Modes
        1. 8.4.3.1 Hard Overload - Fast Trip
        2. 8.4.3.2 Overcurrent Shutdown
    5. 8.5 Programming
      1. 8.5.1 Fault (ISET) and Current-Limit (ILIM) Thresholds
  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 Transient Protection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 PowerPad™
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resource
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

Application Curves

TPS2421-1 TPS2421-2 wav5_lus907.gifFigure 15. 12-V Startup into 15-Ω, 700-μF Load
TPS2421-1 TPS2421-2 wav7_lus907.gifFigure 17. 12-V Faulted Startup into 4-Ω Load
TPS2421-1 TPS2421-2 wav9_lus907.gifFigure 19. 12-V Firm Overload, 3 A to 5.4 A,
Power Limit Tripped
TPS2421-1 TPS2421-2 wav11_lus907.gifFigure 21. Power Dissipation During 12-V
Startup into 60 Ω, 800 μF
TPS2421-1 TPS2421-2 wav6_lus907.gifFigure 16. 12 V, 140 μF Added to 8-Ω Load
TPS2421-1 TPS2421-2 wav8_lus907.gifFigure 18. 12-V Soft Overload, 3 A to 4.2 A,
Power Limit Not Tripped
TPS2421-1 TPS2421-2 wav10_lus907.gifFigure 20. 12-V Hard Overload, 3.6-A Load then Short
TPS2421-1 TPS2421-2 wav12_lus907.gifFigure 22. Power Dissipation During 12-V
Startup into 15 Ω, 140 μF