ZHCSMW2B December   2021  – December 2022 LM5123-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Device Enable/Disable (EN, VH Pin)
      2. 8.3.2  High Voltage VCC Regulator (BIAS, VCC Pin)
      3. 8.3.3  Light Load Switching Mode Selection (MODE Pin)
      4. 8.3.4  VOUT Range Selection (RANGE Pin)
      5. 8.3.5  Line Undervoltage Lockout (UVLO Pin)
      6. 8.3.6  Fast Restart using VCC HOLD (VH Pin)
      7. 8.3.7  Adjustable Output Regulation Target (VOUT, TRK, VREF Pin)
      8. 8.3.8  Overvoltage Protection (VOUT Pin)
      9. 8.3.9  Power Good Indicator (PGOOD Pin)
      10. 8.3.10 Dynamically Programmable Switching Frequency (RT)
      11. 8.3.11 External Clock Synchronization (SYNC Pin)
      12. 8.3.12 Programmable Spread Spectrum (DITHER Pin)
      13. 8.3.13 Programmable Soft Start (SS Pin)
      14. 8.3.14 Wide Bandwidth Transconductance Error Amplifier and PWM (TRK, COMP Pin)
      15. 8.3.15 Current Sensing and Slope Compensation (CSP, CSN Pin)
      16. 8.3.16 Constant Peak Current Limit (CSP, CSN Pin)
      17. 8.3.17 Maximum Duty Cycle and Minimum Controllable On-Time Limits
      18. 8.3.18 Deep Sleep Mode and Bypass Operation (HO, CP Pin)
      19. 8.3.19 MOSFET Drivers, Integrated Boot Diode, and Hiccup Mode Fault Protection (LO, HO, HB Pin)
      20. 8.3.20 Thermal Shutdown Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Status
        1. 8.4.1.1 Shutdown Mode
        2. 8.4.1.2 Configuration Mode
        3. 8.4.1.3 Active Mode
        4. 8.4.1.4 Sleep Mode
        5. 8.4.1.5 Deep Sleep Mode
      2. 8.4.2 Light Load Switching Mode
        1. 8.4.2.1 Forced PWM (FPWM) Mode
        2. 8.4.2.2 Diode Emulation (DE) Mode
        3. 8.4.2.3 Forced Diode Emulation Operation in FPWM Mode
        4. 8.4.2.4 Skip Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Application Ideas
      3. 9.2.3 Application Curves
    3. 9.3 System Example
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 第三方米6体育平台手机版_好二三四免责声明
    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

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • RGR|20
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.4.2.1 Forced PWM (FPWM) Mode

In FPWM mode, the inductor current conducts continuously at light or no load conditions, allowing a continuous conduction mode (CCM) operation. The benefits of the FPWM mode are a fast light load to heavy load transient response, and constant switching frequency at light or no load conditions. The maximum reverse current is limited to 145 mV/RDS(ON) in FPWM mode.
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP | 米乐app下载官网（中国）|ios|Android/通用版APP最新版 | 米乐|米乐·M6（中国大陆）官方网站 | 千亿体育登陆地址 | 华体会体育（中国）HTH·官方网站 | 千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载 | 18新利网v1.2.5|中国官方网站 | bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】 | 千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装 |