SLVSAA6B April   2010  – November 2014 TPS54240

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 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 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  Fixed Frequency PWM Control
      2. 7.3.2  Slope Compensation Output Current
      3. 7.3.3  Pulse Skip Eco-Mode
      4. 7.3.4  Low Dropout Operation and Bootstrap Voltage (BOOT)
      5. 7.3.5  Error Amplifier
      6. 7.3.6  Voltage Reference
      7. 7.3.7  Adjusting The Output Voltage
      8. 7.3.8  Enable And Adjusting Undervoltage Lockout
      9. 7.3.9  Slow-Start / Tracking Pin (SS/TR)
      10. 7.3.10 Overload Recovery Circuit
      11. 7.3.11 Sequencing
      12. 7.3.12 Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
      13. 7.3.13 Overcurrent Protection and Frequency Shift
      14. 7.3.14 Selecting the Switching Frequency
      15. 7.3.15 How to Interface to RT/CLK Pin
      16. 7.3.16 Powergood (PWRGD Pin)
      17. 7.3.17 Overvoltage Transient Protection
      18. 7.3.18 Thermal Shutdown
      19. 7.3.19 Small Signal Model for Loop Response
      20. 7.3.20 Simple Small Signal Model for Peak Current Mode Control
      21. 7.3.21 Small Signal Model for Frequency Compensation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation Near Minimum VIN (V(VIN) = < 3.5 V)
      2. 7.4.2 Operation With EN Control
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 TPS54240 3.3-V Output Design
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Selecting the Switching Frequency
          2. 8.2.1.2.2  Output Inductor Selection (LO)
          3. 8.2.1.2.3  Output Capacitor
          4. 8.2.1.2.4  Catch Diode
          5. 8.2.1.2.5  Input Capacitor
          6. 8.2.1.2.6  Slow-Start Capacitor
          7. 8.2.1.2.7  Bootstrap Capacitor Selection
          8. 8.2.1.2.8  Undervoltage Lock Out Set Point
          9. 8.2.1.2.9  Output Voltage And Feedback Resistors Selection
          10. 8.2.1.2.10 Compensation
          11. 8.2.1.2.11 Discontinuous Mode And Eco-Mode Boundary
          12. 8.2.1.2.12 Power Dissipation Estimate
        3. 8.2.1.3 Application Curves
      2. 8.2.2 TPS54240 Inverting Power Supply
      3. 8.2.3 TPS54240 Split Rail Power Supply
      4. 8.2.4 12-V To 3.8-V GSM Power Supply
      5. 8.2.5 24-V to 4.2-V GSM Power Supply
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Estimated Circuit Area
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

4 Revision History

NOTE: Page numbers of current version may differ from previous versions.

Changes from A Revision (April 2010) to B Revision

  • Added Pin Configuration and Functions section, Handling Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
  • Changed the Start Input Voltage value in Design Requirements from 6.0 V to 6.25 VGo
  • Changed the Stop Input Voltage value in Design Requirements from 5.5 V to 5.9 V Go
  • Changed the value 6.0 V to 6.25 VGo
  • Changed the value 5.5 V to 5.9 VGo
  • Changed the value 6.0 V to 6.25 VGo
  • Changed the value 5.5 V to 5.9 VGo

Changes from * Revision (April 2010) to A Revision

  • Added 10-Pin 3mm x 3mm SON to FeaturesGo
  • Added Thermal Information table and deleted Package Dissipation Ratings tableGo