ZHCSJ38C December   2018  – August 2019 TPS3840

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     Device Images
      1.      典型应用电路
      2.      TPS3840 典型电源电流
  4. 修订历史记录
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin 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 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 Voltage (VDD)
        1. 8.3.1.1 VDD Hysteresis
        2. 8.3.1.2 VDD Transient Immunity
      2. 8.3.2 User-Programmable Reset Time Delay
      3. 8.3.3 Manual Reset (MR) Input
      4. 8.3.4 Output Logic
        1. 8.3.4.1 RESET Output, Active-Low
        2. 8.3.4.2 RESET Output, Active-High
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Operation (VDD > VDD(min))
      2. 8.4.2 VDD Between VPOR and VDD(min)
      3. 8.4.3 Below Power-On-Reset (VDD < VPOR)
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design 1: Dual Rail Monitoring with Power-Up Sequencing
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Design 2: Battery Voltage and Temperature Monitor
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
      3. 9.2.3 Design 3: Fast Start Undervoltage Supervisor with Level-shifted Input
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
      4. 9.2.4 Design 4: Voltage Monitor with Back-up Battery Switchover
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
      5. 9.2.5 Application Curve: TPS3840EVM
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 器件命名规则
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 Glossary
  13. 13机械、封装和可订购信息

特性

  • 宽工作电压范围:1.5V 至 10V
  • 毫微电源电流:300nA(典型值)、700nA(最大值)
    • 固定阈值电压 (VIT-)
      • 阈值范围为 1.6V 至 4.9V(阶跃为 0.1V)
      • 高精度:1%(典型值)、1.5%(最大值)
      • 内置的迟滞 (VIT+)
        • 1.6V < VIT- ≤ 3.0V = 100mV(典型值)
        • 3.1V ≤ VIT- < 4.9V = 200mV(典型值)
    • 快速启动延迟 (tSTRT):220µs(典型值)、350µs(最大值)
      • 可编程复位延时时间 (tD):
        • 50µs(无电容器)至 6.2s (10µF)
      • 低电平有效手动复位 (MR)
      • 三种输出拓扑:
        • TPS3840DL:漏极开路,低电平有效 (RESET),需要上拉电阻器
        • TPS3840PL:推挽,低电平有效 (RESET)
        • TPS3840PH:推挽,高电平有效 (RESET)
      • 宽温度范围:-40°C 至 +125°C
      • 封装:SOT23-5 (DBV)