SNVS697E January   2011  – December 2016 SM72485

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 Control Circuit Overview
      2. 7.3.2 Current Limit
      3. 7.3.3 N-Channel Buck Switch and Driver
      4. 7.3.4 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Start-Up Regulator (VCC)
      2. 7.4.2 Regulation Comparator
      3. 7.4.3 Overvoltage Comparator
      4. 7.4.4 ON-Time Generator and Shutdown
  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 Selection of External Components
          1. 8.2.2.1.1  RFB1 and RFB2
          2. 8.2.2.1.2  Fs and RT
          3. 8.2.2.1.3  L1
          4. 8.2.2.1.4  C3
          5. 8.2.2.1.5  C2 and R3
          6. 8.2.2.1.6  ESR and R3
          7. 8.2.2.1.7  RCL
          8. 8.2.2.1.8  D1
          9. 8.2.2.1.9  C1
          10. 8.2.2.1.10 C4
          11. 8.2.2.1.11 C5
        2. 8.2.2.2 Low Output Ripple Configurations
          1. 8.2.2.2.1 Reduced Ripple Configuration
          2. 8.2.2.2.2 Minimum Ripple Configuration
          3. 8.2.2.2.3 Alternate Minimum Ripple Configuration
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 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 D Revision (April 2013) to E Revision

  • Added Device Information table, Pin Configuration and Functions section, ESD Ratings table, Thermal Information table, Detailed Description section, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Deleted Renewable Energy Grade from FeaturesGo
  • Deleted Lead temperature (260°C maximum) from Absolute Maximum Ratings tableGo
  • Changed Junction to Ambient, RθJA, value in Thermal Information table From: 200°C/W To: 139.6°C/W (VSSOP) and From: 40°C/W To: 42.3°C/W (WSON)Go

Changes from C Revision (April 2013) to D Revision

  • Changed layout of National Seminconductor Data Sheet to TI formatGo