ZHCS922C May   2012  – October 2015 TPS54140A

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Fixed Frequency PWM Control
      2. 7.3.2  Slope Compensation Output Current
      3. 7.3.3  Pulse Skip Eco-mode
      4. 7.3.4  Bootstrap Voltage (BOOT)
      5. 7.3.5  Low Dropout Operation
      6. 7.3.6  Error Amplifier
      7. 7.3.7  Voltage Reference
      8. 7.3.8  Overload Recovery Circuit
      9. 7.3.9  Overcurrent Protection and Frequency Shift
      10. 7.3.10 Power Good (PWRGD Pin)
      11. 7.3.11 Overvoltage Transient Protection
      12. 7.3.12 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation with VIN < 3.5 V (Minimum VIN)
      2. 7.4.2 Operation with EN Control
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjusting the Output Voltage
      2. 8.1.2 Enable and Adjusting Undervoltage Lockout
      3. 8.1.3 Slow Start/Tracking Pin (SS/TR)
      4. 8.1.4 Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
      5. 8.1.5 Selecting the Switching Frequency
      6. 8.1.6 How to Interface to RT/CLK Pin
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Selecting the Switching Frequency
        2. 8.2.2.2  Output Inductor Selection (LO)
        3. 8.2.2.3  Output Capacitor
        4. 8.2.2.4  Catch Diode
        5. 8.2.2.5  Input Capacitor
        6. 8.2.2.6  Slow Start Capacitor
        7. 8.2.2.7  Bootstrap Capacitor Selection
        8. 8.2.2.8  Undervoltage Lock Out Set Point
        9. 8.2.2.9  Output Voltage and Feedback Resistors Selection
        10. 8.2.2.10 Compensation
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Simple Small Signal Model for Peak Current Mode Control
      2. 8.3.2 Small Signal Model for Frequency Compensation
      3. 8.3.3 Small Signal Model for Loop Response
  9. 9 Power Supply Recommendations
    1. 9.1 Sequencing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation Estimate
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 社区资源
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

12 机械、封装和可订购信息

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