ZHCSPG3B May   2008  – October 2024 UC2843A-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
    1.     Pin Functions
  6. 5 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. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Pulse-by-Pulse Current Limiting
      2. 6.3.2 Current Sense Circuit
      3. 6.3.3 Error Amplifier Configuration
      4. 6.3.4 Undervoltage Lockout
      5. 6.3.5 Oscillator
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Undervoltage Lockout (UVLO) Start-Up
      3. 6.4.3 UVLO Turnoff Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
        1. 10.1.1.1 Custom Design With WEBENCH® Tools
      2. 10.1.2 Device Nomenclature
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Related Links
    4. 10.4 接收文档更新通知
    5. 10.5 支持资源
    6. 10.6 Trademarks
    7. 10.7 静电放电警告
    8. 10.8 术语表
  12. 11Revision History
  13. 12Mechanical, 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

11 Revision History

Changes from Revision A (July 2022) to Revision B (October 2024)

  • 更新了整个文档中的表格、图和交叉参考的编号格式Go
  • Changed in Absolute Maximum Ratings, Lead Temperature (soldering, 10s) from 260°C to 300°CGo
  • Changed Thermal Information, Package Thermal Impedance from 97°C/W to 117.4°C/WGo
  • Added missing "≤" in Electrical Characteristics table, CURRENT SENSE: PSRR, test conditions Go
  • Changed in Electrical Characteristics table, OUTPUT SECTION: Rise and fall time, typical value from 50ns to 25nsGo
  • Changed in Electrical Characteristics table, PWM SECTION: maximum duty cycle, minimum value from 94% to 92%Go
  • Changed Electrical Characteristics table, TOTAL STANDBY CURRENT, Vcc Zener voltage, typical value from 34V to 39VGo
  • Updated Typical Characteristics Frequency vs Rt and Maximum Duty Cycle vs Rt graphsGo

Changes from Revision * (May 2008) to Revision A (July 2022)

  • Updated analog input pins 3 and 5 to 2, 3, and 4Go
  • Added Junction Temperature, TJ to the Absolute Maximum Ratings tableGo
  • Added Recommended Operating ConditionsGo
  • Changed Low-level Output Voltage from 15 V to 1.5 VGo