ZHCS375E November   2011  – December 2015 TPS43340-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  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 Enable Inputs
      2. 7.3.2 Linear Regulator (LREG1)
      3. 7.3.3 Gate-Driver Supply (VREG, EXTSUP)
      4. 7.3.4 External P-Channel Drive (GPULL) and Reverse Battery Protection
      5. 7.3.5 Undervoltage Lockout and Overvoltage Protection
      6. 7.3.6 Synchronous Buck Converter Buck3
        1. 7.3.6.1 Soft Start and Foldback Functions
        2. 7.3.6.2 Current-Mode Control and Current-Limit Protection
        3. 7.3.6.3 Operation in Dropout and Undervoltage Protection
        4. 7.3.6.4 Slew Rate Control (SLEW)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Buck Controllers: Normal Mode PWM Operation
        1. 7.4.1.1 Setting the Operating Frequency
        2. 7.4.1.2 Feedback Inputs
        3. 7.4.1.3 Soft-Start Inputs
        4. 7.4.1.4 Current-Mode Operation
        5. 7.4.1.5 Current Sensing and Current Limit With Foldback
        6. 7.4.1.6 Slope Compensation
        7. 7.4.1.7 Reset Outputs and Filter Delays
        8. 7.4.1.8 Light-Load PFM Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 High- and Low-Side Power NMOS Selection for the Buck Converters
        2. 8.2.2.2 Buck1 Component Selection
        3. 8.2.2.3 Buck2 Component Selection
        4. 8.2.2.4 Buck3 Component Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Grounding and PCB Circuit Layout Considerations
      2. 10.1.2 Other Considerations
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation
      1. 10.3.1 Power Dissipation of Buck1 and Buck2 (VOUT1 and VOUT2)
      2. 10.3.2 Power Dissipation of Buck Converter Buck3 (VOUT3)
        1. 10.3.2.1 High-Side Switch
        2. 10.3.2.2 Low-Side Switch
        3. 10.3.2.3 Linear Regulator (LREG1)
        4. 10.3.2.4 IC Power Consumption
    4. 10.4 Thermal Considerations
      1. 10.4.1 Phase Configuration
  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 文档支持
      1. 11.2.1 相关文档　
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 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

4 修订历史记录

Changes from D Revision (July 2015) to E Revision

  • Update the HBM ESD ratings and added the MM ESD rating back in the ESD Ratings table Go

Changes from C Revision (January 2013) to D Revision

  • Added ESD 额定值表，特性 描述 部分，器件功能模式，应用和实施部分，电源相关建议部分，布局部分，器件和文档支持部分以及机械、封装和可订购信息部分Go

Changes from B Revision (April 2012) to C Revision

Changes from A Revision (January 2012) to B Revision

  • Changed Feedback input to Supply sense input in Abs Max Ratings table.Go
  • Inserted Input voltage for Buck 2 information in the Recommended Operating Conditions table.Go
  • Added VIN2SENSE = 4 V to 40 V in Electrical Characteristics table header.Go
  • Changed Iq_LPM to Iq, changed LPM quiescent current to Quiescent current, and changed the conditions for EN in the Electrical Characteristics table.Go