SNVS446D June   2006  – January 2016 LM1771

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 Timing Opinion
      2. 7.3.2 Short-Circuit Protection
      3. 7.3.3 Precision Enable
      4. 7.3.4 Soft-Start
      5. 7.3.5 Jitter
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 LM1771 Typical Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Design Guide
            1. 8.2.1.2.1.1 Frequency Selection
            2. 8.2.1.2.1.2 Inductor Selection
            3. 8.2.1.2.1.3 Output Capacitor
            4. 8.2.1.2.1.4 Feedforward Capacitor
            5. 8.2.1.2.1.5 Input Capacitor
          2. 8.2.1.2.2 MOSFET Selection
            1. 8.2.1.2.2.1 VDS Voltage Rating
            2. 8.2.1.2.2.2 RDSON
            3. 8.2.1.2.2.3 Gate Drive
            4. 8.2.1.2.2.4 Gate Charge
            5. 8.2.1.2.2.5 Rise and Fall Times
            6. 8.2.1.2.2.6 Gate Charge Ratio
            7. 8.2.1.2.2.7 Feedback Resistors
          3. 8.2.1.2.3 Efficiency Calculations
            1. 8.2.1.2.3.1 Quiescent Current
            2. 8.2.1.2.3.2 Conduction Loss
            3. 8.2.1.2.3.3 Switching Loss
            4. 8.2.1.2.3.4 Transitional Loss
            5. 8.2.1.2.3.5 DCR Loss
            6. 8.2.1.2.3.6 Efficiency
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Example Application 5 VIN to 1.8 VOUT
      3. 8.2.3 Example Application 5 VIN to 3.3 VOUT
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 Thermal Considerations
  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 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 C Revision (April 2013) to D Revision

  • Added ESD Ratings 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

Changes from B Revision (April 2013) to C Revision

  • Changed layout of National Data Sheet to TI formatGo