ZHCSL91B October   2020  – March 2022 TPS25947

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
      1.      15
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Input Reverse Polarity Protection
      2. 8.3.2  Undervoltage Lockout (UVLO and UVP)
      3. 8.3.3  Overvoltage Lockout (OVLO)
      4. 8.3.4  Overvoltage Clamp (OVC)
      5. 8.3.5  Inrush Current, Overcurrent, and Short Circuit Protection
        1. 8.3.5.1 Slew Rate (dVdt) and Inrush Current Control
        2. 8.3.5.2 Circuit-Breaker
        3. 8.3.5.3 Active Current Limiting
        4. 8.3.5.4 Short-Circuit Protection
      6. 8.3.6  Analog Load Current Monitor
      7. 8.3.7  Reverse Current Protection
      8. 8.3.8  Overtemperature Protection (OTP)
      9. 8.3.9  Fault Response and Indication (FLT)
      10. 8.3.10 Auxiliary Channel Control (AUXOFF)
      11. 8.3.11 Power Good Indication (PG)
    4. 8.4 Device Functional Modes
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Single Device, Self-Controlled
    3. 9.3 Typical Application
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
        1. 9.3.2.1 Device Selection
        2. 9.3.2.2 Setting Undervoltage and Overvoltage Thresholds
        3. 9.3.2.3 Setting Output Voltage Rise Time (tR)
        4. 9.3.2.4 Setting Power Good Assertion Threshold
        5. 9.3.2.5 Setting Overcurrent Threshold (ILIM)
        6. 9.3.2.6 Setting Overcurrent Blanking Interval (tITIMER)
      3. 9.3.3 Application Curves
    4. 9.4 Active ORing
    5. 9.5 Priority Power MUXing
    6. 9.6 USB PD Port Protection
    7. 9.7 Parallel Operation
  10. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, 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

  • 宽工作输入电压范围:2.7V 至 23V
    • 绝对最大值为 28V
    • 可耐受高达 –15V 的负电压
  • 具有低导通电阻的集成式背对背 FET:RON = 28.3 mΩ(典型值)
  • 具有真反向电流阻断功能的理想二极管运行状态
  • 快速过压保护
    • 过压钳位 (OVC),可通过引脚选择阈值(3.8V、5.7V、13.8V),响应时间为 5 μs(典型值),或
    • 可调节过压锁定 (OVLO),响应时间为 1.2 μs(典型值)
  • 过流保护,具有负载电流监控器输出 (ILM)
    • 主动电流限制或断路器选项
    • 可调节阈值 (ILIM):0.5A 至 6A
      • ILIM > 1A 时精度为 ±10%
    • 可调瞬态消隐计时器 (ITIMER),支持高达 2 x ILIM 的峰值电流
    • 输出负载电流监控器精度:±6% (IOUT ≥ 1A)
  • 通过快速跳变响应实现短路保护
    • 响应时间为 500 ns(典型值)
    • 可调节 (2 × ILIM) 和固定阈值
  • 具有可调节欠压锁定阈值 (UVLO) 的高电平有效使能输入
  • 可调节的输出压摆率控制 (dVdt)
  • 过热保护
  • 数字输出
    • 优先电源多路复用器控制 (AUXOFF) 和故障指示 (FLT),或
    • 具有可调节阈值 (PGTH) 的电源正常状态指示 (PG)
  • UL 2367 认证
    • 文件编号 E339631
    • RILM ≥ 750Ω
  • 获得 IEC 62368-1 CB 认证
  • 小尺寸:QFN 2mm × 2mm,0.45mm 间距