JAJSAC1H November   2007  – October 2024 LM3481

PRODUCTION DATA  

1.   1
2. 1 特長
3. 2 アプリケーション
4. 3 概要
5. 4 Pin Configuration and Functions
   1.     Pin Functions
6. 5 Specifications
   1. 5.1 Absolute Maximum Ratings
   2. 5.2 ESD Ratings: LM3481
   3. 5.3 Recommended Operating Ratings
   4. 5.4 Thermal Information
   5. 5.5 Electrical Characteristics
   6. 5.6 Typical Characteristics
7. 6 Detailed Description
   1. 6.1 Overview
   2. 6.2 Functional Block Diagram
   3. 6.3 Feature Description
      1. 6.3.1 Overvoltage Protection
      2. 6.3.2 Bias Voltage
      3. 6.3.3 Slope Compensation Ramp
      4. 6.3.4 Frequency Adjust, Synchronization, and Shutdown
      5. 6.3.5 Undervoltage Lockout (UVLO) Pin
      6. 6.3.6 Short-Circuit Protection
   4. 6.4 Device Functional Modes
8. 7 Application and Implementation
   1. 7.1 Application Information
   2. 7.2 Typical Applications
      1. 7.2.1 Boost Converter
         1. 7.2.1.1 Design Requirements
         2. 7.2.1.2 Detailed Design Procedure
            1. 7.2.1.2.1  Custom Design with WEBENCH Tools
            2. 7.2.1.2.2  Power Inductor Selection
            3. 7.2.1.2.3  Programming the Output Voltage and Output Current
            4. 7.2.1.2.4  Current Limit With Additional Slope Compensation
            5. 7.2.1.2.5  Power Diode Selection
            6. 7.2.1.2.6  Power MOSFET Selection
            7. 7.2.1.2.7  Input Capacitor Selection
            8. 7.2.1.2.8  Output Capacitor Selection
            9. 7.2.1.2.9  Driver Supply Capacitor Selection
            10. 7.2.1.2.10 Compensation
         3. 7.2.1.3 Application Curve
      2. 7.2.2 Typical SEPIC Converter
         1. 7.2.2.1 Design Requirements
         2. 7.2.2.2 Detailed Design Procedure
            1. 7.2.2.2.1 Power MOSFET Selection
            2. 7.2.2.2.2 Power Diode Selection
            3. 7.2.2.2.3 Selection of Inductors L1 and L2
            4. 7.2.2.2.4 Sense Resistor Selection
            5. 7.2.2.2.5 SEPIC Capacitor Selection
            6. 7.2.2.2.6 Input Capacitor Selection
            7. 7.2.2.2.7 Output Capacitor Selection
         3. 7.2.2.3 Application Curve
   3. 7.3 Power Supply Recommendations
   4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
9. 8 Device and Documentation Support
   1. 8.1 Documentation Support
      1. 8.1.1 Custom Design with WEBENCH Tools
      2. 8.1.2 Related Documentation
   2. 8.2 Receiving Notification of Documentation Updates
   3. 8.3 Support Resources
   4. 8.4 Trademarks
10. 9 Revision History
11. 10Mechanical, Packaging, and Orderable Information

LM3481 昇圧、SEPIC、およびフライバック DC/DC コンバータ用、高効率コントローラ

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