SNVS632S December   2009  – July 2017 LMZ14203

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 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 COT Control Circuit Overview
      2. 7.3.2 Output Overvoltage Comparator
      3. 7.3.3 Current Limit
      4. 7.3.4 Thermal Protection
      5. 7.3.5 Zero Coil Current Detection
      6. 7.3.6 Prebiased Start-Up
    4. 7.4 Device Functional Modes
      1. 7.4.1 Discontinuous Conduction and Continuous Conduction Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Design Steps for the LMZ14203 Application
          1. 8.2.2.2.1 Enable Divider, RENT and RENB Selection
          2. 8.2.2.2.2 Output Voltage Selection
          3. 8.2.2.2.3 Soft-Start Capacitor Selection
          4. 8.2.2.2.4 CO Selection
          5. 8.2.2.2.5 CIN Selection
          6. 8.2.2.2.6 Discontinuous Conduction and Continuous Conduction Mode Selection
          7. 8.2.2.2.7 RON Resistor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation and Board Thermal Requirements
    4. 10.4 Power Module SMT Guidelines
  11. 11Device and Documentation Support
    1. 11.1 Custom Design With WEBENCH® Tools
    2. 11.2 Device Support
      1. 11.2.1 Development Support
      2. 11.2.2 Third-Party Products Disclaimer
    3. 11.3 Documentation Support
      1. 11.3.1 Related Documentation
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Community Resources
    6. 11.6 Trademarks
    7. 11.7 Electrostatic Discharge Caution
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

4 Revision History

Changes from R Revision (October 2015) to S Revision

  • Changed equation 9 to put a bracket around fsw*delta VINGo
  • Changed equation 10 to put a bracket around VIN and RON2Go

Changes from Q Revision (August 2015) to R Revision

  • Added this new bullet to the Power Module SMT GuidelinesGo

Changes from P Revision (May 2015) to Q Revision

  • Changed the title of the documentGo

Changes from O Revision (October 2013) to P Revision

  • Added ESD Rating table, Thermal Information 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
  • Removed Easy-to-Use Pin Package imageGo

Changes from N Revision (March 2013) to O Revision

  • Deleted 12 milGo
  • Changed 12 milsGo
  • Changed 12 milsGo
  • Added Power Module SMT GuidelinesGo