ZHCST52A September   2023  – November 2023 TPS7B4256-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 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Tracker Output Voltage (VOUT)
        1. 6.3.1.1 Output Voltage Equal to Reference Voltage
        2. 6.3.1.2 Output Voltage Less Than the Reference Voltage
        3. 6.3.1.3 Output Voltage Larger Than the Reference Voltage
      2. 6.3.2 Reverse Current Protection
      3. 6.3.3 Undervoltage Lockout
      4. 6.3.4 Thermal Protection
      5. 6.3.5 Current Limit
      6. 6.3.6 Output Short to Battery
      7. 6.3.7 Tracking Regulator With an Enable Circuit
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Operation With VIN < 3 V
      4. 6.4.4 Disable With ADJ/EN Control
  8. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Dropout Voltage
      2. 7.1.2 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input and Output Capacitor Selection
        2. 7.2.2.2 Feedback Resistor Selection
        3. 7.2.2.3 Feedforward Capacitor
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Package Mounting
        2. 7.4.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
        3. 7.4.1.3 Power Dissipation and Thermal Considerations
        4. 7.4.1.4 Thermal Performance Versus Copper Area
        5. 7.4.1.5 Layout Examples
  9. Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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

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
    • 结温:–40°C 至 +150°C,TJ
  • 宽输入电压范围:
    • 绝对最大电压范围:-40V 至 +45V
    • 工作范围:3V 至 40V
  • 输出电压:
    • 宽工作电压范围:2V 至 40V
    • 输出电压灵活性:在分压器配置中,使用外部电阻器可将 VOUT 调整为高于或低于基准的电压值
  • 最大输出电流:70mA
  • 非常严格的输出跟踪容差:6mV(最大值)
  • 低压降:70mA 时为 225mV(最大值)
  • 组合了使能和基准功能
  • 轻负载时低静态电流:60μA
  • 在各种陶瓷输出电容值范围内可保持稳定:
    • COUT 范围:1μF 至 100μF
    • ESR 范围:1mΩ 至 2Ω
  • 集成保护特性:
    • 反向电流保护
    • 反极性保护
    • 过热保护
    • 提供输出至地和输出至电源短路保护
  • 采用以下低热阻 8 引脚封装:
    • HSOIC (DDA),RθJA = 53.3°C/W
    • SOIC (D),RθJA = 101°C/W