ZHCSL48 April   2020 LM5181-Q1

PRODUCTION DATA.  

1. 1 特性
2. 2 应用
3. 3 说明
   1.     Device Images
      1.      典型应用
      2.      典型效率 (VOUT = 5V)
4. 4 修订历史记录
5. 5 说明 （续）
6. 6 Pin Configuration and Functions
   1.     Pin 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 Typical Characteristics
8. 8 Detailed Description
   1. 8.1 Overview
   2. 8.2 Functional Block Diagram
   3. 8.3 Feature Description
      1. 8.3.1  Integrated Power MOSFET
      2. 8.3.2  PSR Flyback Modes of Operation
      3. 8.3.3  Setting the Output Voltage
         1. 8.3.3.1 Diode Thermal Compensation
      4. 8.3.4  Control Loop Error Amplifier
      5. 8.3.5  Precision Enable
      6. 8.3.6  Configurable Soft Start
      7. 8.3.7  External Bias Supply
      8. 8.3.8  Minimum On-Time and Off-Time
      9. 8.3.9  Overcurrent Protection
      10. 8.3.10 Thermal Shutdown
   4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
9. 9 Application and Implementation
   1. 9.1 Application Information
   2. 9.2 Typical Applications
      1. 9.2.1 Design 1: Wide VIN, Low IQ PSR Flyback Converter Rated at 5 V, 0.5 A
         1. 9.2.1.1 Design Requirements
         2. 9.2.1.2 Detailed Design Procedure
            1. 9.2.1.2.1  Custom Design With WEBENCH® Tools
            2. 9.2.1.2.2  Custom Design With Excel Quickstart Tool
            3. 9.2.1.2.3  Flyback Transformer – T1
            4. 9.2.1.2.4  Flyback Diode – DFLY
            5. 9.2.1.2.5  Zener Clamp Circuit – DF, DCLAMP
            6. 9.2.1.2.6  Output Capacitor – COUT
            7. 9.2.1.2.7  Input Capacitor – CIN
            8. 9.2.1.2.8  Feedback Resistor – RFB
            9. 9.2.1.2.9  Thermal Compensation Resistor – RTC
            10. 9.2.1.2.10 UVLO Resistors – RUV1, RUV2
            11. 9.2.1.2.11 Soft-Start Capacitor – CSS
      2. 9.2.2 Application Curves
10. 10Power Supply Recommendations
11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
12. 12器件和文档支持
    1. 12.1 器件支持
       1. 12.1.1 第三方产品免责声明
       2. 12.1.2 开发支持
       3. 12.1.3 使用 WEBENCH® 工具创建定制设计方案
    2. 12.2 文档支持
       1. 12.2.1 相关文档
    3. 12.3 接收文档更新通知
    4. 12.4 支持资源
    5. 12.5 商标
    6. 12.6 静电放电警告
    7. 12.7 Glossary
13. 13机械、封装和可订购信息