ZHCSHM2D June   2018  – April 2025 TPS746-Q1

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Undervoltage Lockout (UVLO)
      2. 6.3.2 Shutdown
      3. 6.3.3 Foldback Current Limit
      4. 6.3.4 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Disabled
  8. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Adjustable Device Feedback Resistors
      2. 7.1.2 Input and Output Capacitor Selection
      3. 7.1.3 Dropout Voltage
      4. 7.1.4 Exiting Dropout
      5. 7.1.5 Reverse Current
      6. 7.1.6 Power Dissipation (PD)
      7. 7.1.7 Power-Good Function
      8. 7.1.8 Feed-Forward Capacitor (CFF)
      9. 7.1.9 Start-Up Sequencing
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input Current
        2. 7.2.2.2 Thermal Dissipation
      3. 7.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Examples
  9. Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

特性

  • 符合面向汽车应用的 AEC-Q100 标准:
    • 温度等级 1:–40°C 至 +125°C,TA
  • 器件工作结温范围:
    • -40°C 至 +150°C
  • 封装:
    • 2mm x 2mm 可湿性侧面 WSON 封装
    • 3mm x 3mm 可湿性侧面 VSON 封装
  • 输入电压范围:1.5V 至 6.0V
  • 输出电压范围:
    • 固定电压:0.65V 至 5.0V
    • 可调节电压:0.55V 至 5.5V
  • 高 PSRR:100kHz 时为 38dB
  • 输出精度:典型值为 ±0.85%,最大值为 ±1.5%
  • 电源正常状态输出选项:
    • 漏极开路或推挽
  • 超低压降:
    • 1A 时为 265mV(最大值)(3.3 VOUT)
  • 与 1µF 或更大的电容器搭配使用时可保持稳定
  • 低 IQ:25μA(典型值)
  • 有源输出放电
  • 功能安全型
  • 低热阻:
    • DRV(6 引脚 WSON),RθJA = 80.3°C/W
    • DRB(8 引脚 VSON),RθJA = 55.5°C/W