ZHCSLU2C December   2021  – August 2024 LM63440-Q1 , LM63460-Q1

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 應(yīng)用
4. 3 說(shuō)明
5. 4 Device Comparison Table
6. 5 Pin Configuration and Functions
   1. 5.1 Wettable Flanks
   2. 5.2 Pinout Design for Clearance and FMEA
7. 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 Timing Characteristics
   7. 6.7 Systems Characteristics
   8. 6.8 Typical Characteristics
8. 7 Detailed Description
   1. 7.1 Overview
   2. 7.2 Functional Block Diagram
   3. 7.3 Feature Description
      1. 7.3.1  Input Voltage Range (VIN1, VIN2)
      2. 7.3.2  Output Voltage Setpoint (FB)
      3. 7.3.3  Precision Enable and Input Voltage UVLO (EN/SYNC)
      4. 7.3.4  Frequency Synchronization (EN/SYNC)
      5. 7.3.5  Clock Locking
      6. 7.3.6  Adjustable Switching Frequency (RT)
      7. 7.3.7  Power-Good Monitor (PGOOD)
      8. 7.3.8  Bias Supply Regulator (VCC, BIAS)
      9. 7.3.9  Bootstrap Voltage and UVLO (CBOOT)
      10. 7.3.10 Spread Spectrum
      11. 7.3.11 Soft Start and Recovery From Dropout
      12. 7.3.12 Overcurrent and Short-Circuit Protection
      13. 7.3.13 Thermal Shutdown
      14. 7.3.14 Input Supply Current
   4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
         1. 7.4.3.1 CCM Mode
         2. 7.4.3.2 AUTO Mode – Light-Load Operation
            1. 7.4.3.2.1 Diode Emulation
            2. 7.4.3.2.2 Frequency Foldback
         3. 7.4.3.3 FPWM Mode – Light-Load Operation
         4. 7.4.3.4 Minimum On-Time (High Input Voltage) Operation
         5. 7.4.3.5 Dropout
9. 8 Application and Implementation
   1. 8.1 Application Information
   2. 8.2 Typical Applications
      1. 8.2.1 Design 1 – Automotive Synchronous 6A Buck Regulator at 2.1MHz
         1. 8.2.1.1 Design Requirements
      2. 8.2.2 Design 2 – Automotive Synchronous 4A Buck Regulator at 2.1MHz
         1. 8.2.2.1 Design Requirements
         2. 8.2.2.2 Detailed Design Procedure
            1. 8.2.2.2.1  Custom Design With WEBENCH? Tools
            2. 8.2.2.2.2  Setting the Output Voltage
            3. 8.2.2.2.3  Choosing the Switching Frequency
            4. 8.2.2.2.4  Inductor Selection
            5. 8.2.2.2.5  Output Capacitor Selection
            6. 8.2.2.2.6  Input Capacitor Selection
            7. 8.2.2.2.7  Bootstrap Capacitor
            8. 8.2.2.2.8  VCC Capacitor
            9. 8.2.2.2.9  BIAS Power Connection
            10. 8.2.2.2.10 Feedforward Network
            11. 8.2.2.2.11 Input Voltage UVLO
         3. 8.2.2.3 Application Curves
      3. 8.2.3 Design 3 – Automotive Synchronous 6A Buck Regulator at 400kHz
         1. 8.2.3.1 Design Requirements
         2. 8.2.3.2 Detailed Design Procedure
         3. 8.2.3.3 Application Curves
   3. 8.3 Power Supply Recommendations
   4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
         1. 8.4.1.1 Thermal Design and Layout
      2. 8.4.2 Layout Example
10. 9 Device and Documentation Support
    1. 9.1 Device Support
       1. 9.1.1 第三方產(chǎn)品免責(zé)聲明
       2. 9.1.2 Development Support
          1. 9.1.2.1 Custom Design With WEBENCH? Tools
    2. 9.2 Documentation Support
       1. 9.2.1 Related Documentation
    3. 9.3 接收文檔更新通知
    4. 9.4 支持資源
    5. 9.5 Trademarks
    6. 9.6 靜電放電警告
    7. 9.7 術(shù)語(yǔ)表
11. 10Revision History
12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

LM634x0-Q1 具有可調(diào)開(kāi)關(guān)頻率、經(jīng)優(yōu)化可實(shí)現(xiàn)可靠性和低 EMI 的 3V 至 36V、4A 和 6A、汽車級(jí)同步直流/直流降壓轉(zhuǎn)換器

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