ZHCSHU8F October   2008  – July 2019 LM5575-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Shutdown and Standby
      2. 7.3.2 Current Limit
      3. 7.3.3 Soft Start
      4. 7.3.4 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 High-Voltage Start-Up Regulator
      2. 7.4.2 Oscillator and Sync Capability
      3. 7.4.3 Error Amplifier and PWM Comparator
      4. 7.4.4 Ramp Generator
      5. 7.4.5 BOOST Pin
      6. 7.4.6 Maximum Duty Cycle and Input Dropout Voltage
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bias Power Dissipation Reduction
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Custom Design With WEBENCH® Tools
        2. 8.2.2.2  External Components
        3. 8.2.2.3  R3 (RT)
        4. 8.2.2.4  L1
        5. 8.2.2.5  C3 (CRAMP)
        6. 8.2.2.6  C9, C10
        7. 8.2.2.7  D1
        8. 8.2.2.8  C1, C2
        9. 8.2.2.9  C8
        10. 8.2.2.10 C7
        11. 8.2.2.11 C4
        12. 8.2.2.12 R5, R6
        13. 8.2.2.13 R1, R2, C12
        14. 8.2.2.14 R7, C11
        15. 8.2.2.15 R4, C5, C6
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 Thermal Considerations
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 使用 WEBENCH® 工具创建定制设计
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 Glossary
  12. 12机械、封装和可订购信息

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

4 修订历史记录

Changes from E Revision (February 2019) to F Revision

  • 在“特性”中添加了“等级 0” 信息 Go
  • 在“说明”末尾添加了等级 1 和等级 0 的 句子 Go

Changes from D Revision (March 2018) to E Revision

  • 从数据表中删除了 LM2xxx 器件引用Go
  • Changed "760" mΩ to "800 mΩ" in buck switch Rds(on) over full operating junction temperature rowGo
  • Changed forced off-time maximum value from: 590 ns to: 626 ns in full operating junction temperature rangeGo

Changes from C Revision (December 2014) to D Revision

  • Added 添加了 WEBENCH 链接；对 SEO 改进进行了细微的编辑性更新Go
  • Changed RθJA from "50°C/W" to "38.4°C/W" Go
  • Changed RθJC(top) from "14°C/W" to "21.8°C/W"; add additional thermal values Go
  • Corrected unit for RL to "kΩ"Go

Changes from B Revision (April 2013) to C Revision

  • Added 添加了引脚配置和功能 部分、处理额定值 表、特性 说明 部分、器件功能模式、应用和实施 部分、电源推荐 部分、布局 部分、器件和文档支持 部分以及机械、封装和可订购信息 部分Go

Changes from A Revision (April 2013) to B Revision

  • Changed layout of National Semiconductor data sheet to TI formatGo