ZHCSLU1A October   2022  – October 2023 LM64460-Q1

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 应用
4. 3 说明
5. 4 Revision History
6. 5 Device Comparison Table
7. 6 Pin Configuration and Functions
   1. 6.1 Wettable Flanks
   2. 6.2 Pinout Design for Clearance and FMEA
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 Timing Characteristics
   7. 7.7 Systems Characteristics
   8. 7.8 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 Voltage Range (VIN1, VIN2)
      2. 8.3.2  Output Voltage Setpoint (FB)
      3. 8.3.3  Precision Enable and Input Voltage UVLO (EN)
      4. 8.3.4  MODE/SYNC Operation
         1. 8.3.4.1 Level-Dependent MODE/SYNC Control
         2. 8.3.4.2 Pulse-Dependent MODE/SYNC Control
      5. 8.3.5  Clock Locking
      6. 8.3.6  Power-Good Monitor (PGOOD)
      7. 8.3.7  Bias Supply Regulator (VCC, BIAS)
      8. 8.3.8  Bootstrap Voltage and UVLO (CBOOT)
      9. 8.3.9  Spread Spectrum
      10. 8.3.10 Soft Start and Recovery From Dropout
      11. 8.3.11 Overcurrent and Short-Circuit Protection
      12. 8.3.12 Thermal Shutdown
      13. 8.3.13 Input Supply Current
   4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
         1. 8.4.3.1 CCM Mode
         2. 8.4.3.2 AUTO Mode – Light-Load Operation
            1. 8.4.3.2.1 Diode Emulation
            2. 8.4.3.2.2 Frequency Foldback
         3. 8.4.3.3 FPWM Mode – Light-Load Operation
         4. 8.4.3.4 Minimum On-Time (High Input Voltage) Operation
         5. 8.4.3.5 Dropout
10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
       1. 9.2.1 Design 1 – Automotive Synchronous Buck Regulator at 2.1 MHz
          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  Setting the Output Voltage
             3. 9.2.1.2.3  Choosing the Switching Frequency
             4. 9.2.1.2.4  Inductor Selection
             5. 9.2.1.2.5  Output Capacitor Selection
             6. 9.2.1.2.6  Input Capacitor Selection
             7. 9.2.1.2.7  Bootstrap Capacitor
             8. 9.2.1.2.8  VCC Capacitor
             9. 9.2.1.2.9  BIAS Power Connection
             10. 9.2.1.2.10 Feedforward Network
             11. 9.2.1.2.11 Input Voltage UVLO
          3. 9.2.1.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
       1. 9.4.1 Layout Guidelines
          1. 9.4.1.1 Thermal Design and Layout
       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
          1. 10.1.2.1 Custom Design With WEBENCH® Tools
    2. 10.2 Documentation Support
       1. 10.2.1 Related Documentation
    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

LM64460-Q1 具有引脚可选轻负载模式、针对可靠性和低 EMI 进行优化的 3V 至 36V、6A 汽车类同步降压直流/直流转换器

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