ZHCSRT4 august   2023 LV5144

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 应用
4. 3 说明
5. 4 Revision History
6. 5 说明（续）
7. 6 Pin Configuration and Functions
   1. 6.1 Wettable Flanks
8. 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
9. 8 Detailed Description
   1. 8.1 Overview
   2. 8.2 Functional Block Diagram
   3. 8.3 Feature Description
      1. 8.3.1  Input Range (VIN)
      2. 8.3.2  Output Voltage Setpoint and Accuracy (FB)
      3. 8.3.3  High-Voltage Bias Supply Regulator (VCC)
      4. 8.3.4  Precision Enable (EN/UVLO)
      5. 8.3.5  Power Good Monitor (PGOOD)
      6. 8.3.6  Switching Frequency (RT, SYNCIN)
         1. 8.3.6.1 Frequency Adjust
         2. 8.3.6.2 Clock Synchronization
      7. 8.3.7  Configurable Soft Start (SS/TRK)
         1. 8.3.7.1 Tracking
      8. 8.3.8  Voltage-Mode Control (COMP)
      9. 8.3.9  Gate Drivers (LO, HO)
      10. 8.3.10 Current Sensing and Overcurrent Protection (ILIM)
      11. 8.3.11 OCP Duty Cycle Limiter
   4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
      4. 8.4.4 Diode Emulation Mode
      5. 8.4.5 Thermal Shutdown
10. 9 Application and Implementation
    1. 9.1 Application Information
       1. 9.1.1 Design and Implementation
       2. 9.1.2 Power Train Components
          1. 9.1.2.1 Inductor
          2. 9.1.2.2 Output Capacitors
          3. 9.1.2.3 Input Capacitors
          4. 9.1.2.4 Power MOSFETs
       3. 9.1.3 Control Loop Compensation
       4. 9.1.4 EMI Filter Design
    2. 9.2 Typical Applications
       1. 9.2.1 Design 1 – 12-A High-Efficiency Synchronous Buck DC/DC Regulator
          1. 9.2.1.1 Design Requirements
          2. 9.2.1.2 Detailed Design Procedure
          3. 9.2.1.3 Application Curves
       2. 9.2.2 Design 2 – High Density, 12-V, 8-A Rail From 48-V Telecom Power
          1. 9.2.2.1 Design Requirements
          2. 9.2.2.2 Detailed Design Procedure
          3. 9.2.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
       1. 9.4.1 Layout Guidelines
          1. 9.4.1.1 Power Stage Layout
          2. 9.4.1.2 Gate Drive Layout
          3. 9.4.1.3 PWM Controller Layout
          4. 9.4.1.4 Thermal Design and Layout
          5. 9.4.1.5 Ground Plane Design
       2. 9.4.2 Layout Example
11. 10Device and Documentation Support
    1. 10.1 Device Support
       1. 10.1.1 第三方产品免责声明
       2. 10.1.2 Development Support
    2. 10.2 Documentation Support
       1. 10.2.1 Related Documentation
          1. 10.2.1.1 PCB Layout Resources
          2. 10.2.1.2 Thermal Design Resources
    3. 10.3 接收文档更新通知
    4. 10.4 支持资源
    5. 10.5 Trademarks
    6. 10.6 静电放电警告
    7. 10.7 术语表
12. 11Mechanical, Packaging, and Orderable Information

具有宽占空比范围的 LV5144 95V 同步直流/直流降压控制器