ZHCSIJ1E June   1999  – July 2018 LM2574 , LM2574HV

PRODUCTION DATA.  

1. 1 特性
2. 2 應用
3. 3 說明
   1.     Device Images
      1.      典型應用（固定輸出電壓版本）
4. 4 修訂歷史記錄
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 for All Output Voltage Versions
   6. 6.6  Electrical Characteristics – 3.3-V Version
   7. 6.7  Electrical Characteristics – 5-V Version
   8. 6.8  Electrical Characteristics – 12-V Version
   9. 6.9  Electrical Characteristics – 15-V Version
   10. 6.10 Electrical Characteristics – Adjustable Version
   11. 6.11 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 Current Limit
      2. 7.3.2 Undervoltage Lockout
      3. 7.3.3 Delayed Start-Up
      4. 7.3.4 Adjustable Output, Low-Ripple Power Supply
   4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Active Mode
8. 8 Application and Implementation
   1. 8.1 Application Information
      1. 8.1.1 Input Capacitor (CIN)
      2. 8.1.2 Inductor Selection
      3. 8.1.3 Inductor Ripple Current
      4. 8.1.4 Output Capacitor
      5. 8.1.5 Catch Diode
      6. 8.1.6 Output Voltage Ripple and Transients
      7. 8.1.7 Feedback Connection
      8. 8.1.8 ON/OFF Input
      9. 8.1.9 Additional Applications
         1. 8.1.9.1 Inverting Regulator
         2. 8.1.9.2 Negative Boost Regulator
   2. 8.2 Typical Applications
      1. 8.2.1 Fixed Output Voltage Applications
         1. 8.2.1.1 Design Requirements
         2. 8.2.1.2 Detailed Design Procedure
            1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
            2. 8.2.1.2.2 Inductor Selection (L1)
            3. 8.2.1.2.3 Output Capacitor Selection (COUT)
            4. 8.2.1.2.4 Catch Diode Selection (D1)
            5. 8.2.1.2.5 Input Capacitor (CIN)
         3. 8.2.1.3 Application Curves
      2. 8.2.2 Adjustable Output Voltage Applications
         1. 8.2.2.1 Design Requirements
         2. 8.2.2.2 Detailed Design Procedure
            1. 8.2.2.2.1 Programming Output Voltage
            2. 8.2.2.2.2 Inductor Selection (L1)
            3. 8.2.2.2.3 Output Capacitor Selection (COUT)
            4. 8.2.2.2.4 Catch Diode Selection (D1)
            5. 8.2.2.2.5 Input Capacitor (CIN)
         3. 8.2.2.3 Application Curves
9. 9 Power Supply Recommendations
10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Grounding
    4. 10.4 Thermal Considerations
11. 11器件和文檔支持
    1. 11.1 器件支持
       1. 11.1.1 第三方產品免責聲明
       2. 11.1.2 使用 WEBENCH® 工具創(chuàng)建定制設計
       3. 11.1.3 器件命名規(guī)則
          1. 11.1.3.1  降壓穩(wěn)壓器
          2. 11.1.3.2  降壓/升壓穩(wěn)壓器
          3. 11.1.3.3  占空比 (D)
          4. 11.1.3.4  環(huán)流二極管或導流二極管
          5. 11.1.3.5  電容器等效串聯(lián)電阻 (ESR)
          6. 11.1.3.6  等效串聯(lián)電感 (ESL)
          7. 11.1.3.7  輸出紋波電壓
          8. 11.1.3.8  電容器紋波電流
          9. 11.1.3.9  待機靜態(tài)電流 (ISTBY)
          10. 11.1.3.10 電感器紋波電流 (ΔiIND)
          11. 11.1.3.11 連續(xù)與非連續(xù)模式運行
          12. 11.1.3.12 電感器飽和
          13. 11.1.3.13 運算伏特微秒常數 (E × Top)
    2. 11.2 文檔支持
       1. 11.2.1 相關文檔
    3. 11.3 接收文檔更新通知
    4. 11.4 社區(qū)資源
    5. 11.5 商標
    6. 11.6 靜電放電警告
    7. 11.7 術語表
12. 12機械、封裝和可訂購信息