SLUS859C October   2008  – January 2015 TPS54233

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 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 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Feature Description
      1. 8.2.1  Fixed Frequency PWM Control
      2. 8.2.2  Voltage Reference (Vref)
      3. 8.2.3  Bootstrap Voltage (BOOT)
      4. 8.2.4  Enable and Adjustable Input Under-Voltage Lockout (VIN UVLO)
      5. 8.2.5  Programmable Slow Start Using SS PIN
      6. 8.2.6  Error Amplifier
      7. 8.2.7  Slope Compensation
      8. 8.2.8  Current Mode Compensation Design
      9. 8.2.9  Overcurrent Protection and Frequency Shift
      10. 8.2.10 Overvoltage Transient Protection
      11. 8.2.11 Thermal Shutdown
    3. 8.3 Device Functional Modes
      1. 8.3.1 Eco-modeTM
  9. 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 Switching Frequency
        2. 9.2.2.2 Output Voltage Set Point
        3. 9.2.2.3 Input Capacitors
        4. 9.2.2.4 Output Filter Components
          1. 9.2.2.4.1 Inductor Selection
          2. 9.2.2.4.2 Capacitor Selection
        5. 9.2.2.5 Compensation Components
        6. 9.2.2.6 Bootstrap Capacitor
        7. 9.2.2.7 Catch Diode
        8. 9.2.2.8 Output Voltage Limitations
        9. 9.2.2.9 Power Dissipation Estimate
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Estimated Circuit Area
    4. 11.4 Electromagnetic Interference (EMI) Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

5 Revision History

Changes from B Revision (February 2011) to C Revision

  • Added ESD Rating table, Thermal Information table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Device and Documentation Support section, and Mechanical, Packaging sections. Go
  • Deleted Features Item: For SWIFT™ Documentation, See the TI Website at www.ti.com/swiftGo
  • Changed Features item: Supported by SwitcherPro™ To: Supported by WEBENCH®Go
  • Changed RO1 To: R5, RO2 To R6, C1 To C6, and C2 To C7 in the Simplified SchematicGo
  • Changed SwitcherPro™ Software tool To: WEBENCH Software tool in the Current Mode Compensation Design sectionGo
  • Changed RO1 To: R5, RO2 To R6, C1 To C6, and C2 To C7 in the Table 1Go
  • Changed the Output Voltage Set Point section. Updated the paragraph following Equation 5.Go

Changes from A Revision (March 2010) to B Revision

  • Figure 14, Changed VIN = 18 V on the top (blue) curve To: VIN = 8 VGo

Changes from * Revision (October 2008) to A Revision

  • Changed the Absolute Maximum Ratings table, Input Voltage - EN pin max value From: 5V to 6VGo
  • Added A table to the Description - with text "For additional design needs, see.."Go