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

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Revision History

Changes from J Revision (October 2016) to K Revision

Changes from I Revision (January 2015) to J Revision

Changes from H Revision (January 2014) to I Revision

Changes from G Revision (May 2013) to H Revision

  • Deleted minimum voltage from voltage range in the document title, features list and descriptionGo
  • Added 5-A to document titleGo
  • Changed listed to recognized in UL FEATURES bullet, also added specific UL numberGo
  • Added SSDs, PCIE, and Fan Control to the APPLICATIONS listGo
  • Added maximum-UV turn-on threshold of 2.9 V sentence to the first paragraph of the DESCRIPTIONGo
  • Deleted capacitor, CVIN, and diode from the Typical Application image. Also changed RSET to RRSET and COUT to CLOAD. Removed voltage range and changed OUT to VOUT. Also removed note on the former COUT stating that this is only required in systems with lead and/or load inductanceGo
  • Changed COUT to CLOAD and RSET to RRSET throughout documentGo
  • Changed current limit value of the ISET description from 125% to 150% in thePin Functions table. Also removed TPS2421 only text form this descriptionGo
  • Changed COUT to CVOUT for the power limit parameter in the Electrical Characteristics tableGo
  • Changed RSET = 100 kW to RRSET = 100 kΩ in the FAULT CURRENT vs JUNCTION TEMPERATURE graphGo
  • Added note for TPS2421-1 to the VIN description in the PIN DESCRIPTION sectionGo
  • Changed VIN to VVIN in the functional block diagram, Equation 6Go
  • Changed In to VVIN in Equation 17Go

Changes from G Revision (May 2013) to H Revision

  • Deleted minimum voltage from voltage range in the document title, features list and descriptionGo
  • Added 5-A to document titleGo
  • Changed listed to recognized in UL FEATURES bullet, also added specific UL numberGo
  • Added SSDs, PCIE, and Fan Control to the APPLICATIONS listGo
  • Added maximum-UV turn-on threshold of 2.9 V sentence to the first paragraph of the DESCRIPTIONGo
  • Deleted capacitor, CVIN, and diode from the Typical Application image. Also changed RSET to RRSET and COUT to CLOAD. Removed voltage range and changed OUT to VOUT. Also removed note on the former COUT stating that this is only required in systems with lead and/or load inductanceGo
  • Changed COUT to CLOAD and RSET to RRSET throughout documentGo
  • Changed current limit value of the ISET description from 125% to 150% in thePin Functions table. Also removed TPS2421 only text form this descriptionGo
  • Changed COUT to CVOUT for the power limit parameter in the Electrical Characteristics tableGo
  • Changed RSET = 100 kW to RRSET = 100 kΩ in the FAULT CURRENT vs JUNCTION TEMPERATURE graphGo
  • Added note for TPS2421-1 to the VIN description in the PIN DESCRIPTION sectionGo
  • Changed VIN to VVIN in the functional block diagram, Equation 6Go
  • Changed In to VVIN in Equation 17Go

Changes from F Revision (April 2013) to G Revision

Changes from E Revision (September 2011) to F Revision

Changes from D Revision (August 2010) to E Revision

  • Changed RFLT to RSETGo
  • Changed equation 3 from RIFLT to RISET and IFAULT to ISETGo

Changes from C Revision (July 2010) to D Revision

  • Added Feature: UL Listed - File Number E169910Go

Changes from B Revision (June 2010) to C Revision

  • Changed TSD (ms) column in Table 3. (the table was deleted in revision F)Go

Changes from A Revision (March 2009) to B Revision

  • Added For the most current package and ordering information, see the Package Option Addendum at the end of this document, or visit the device product folder on www.ti.com.Go