ZHCS529I January   2007  – April 2025 LM25574

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 应用
4. 3 说明
5. 4 Pin Configuration and 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 High Voltage Start-Up Regulator
   4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown and Standby Mode
      2. 6.4.2 Oscillator and Sync Capability
      3. 6.4.3 Error Amplifier and PWM Comparator
      4. 6.4.4 Ramp Generator
      5. 6.4.5 Maximum Duty Cycle and Input Drop-out Voltage
      6. 6.4.6 Current Limit
      7. 6.4.7 Soft-Start
      8. 6.4.8 Boost Pin
      9. 6.4.9 Thermal Protection
8. 7 Application and Implementation
   1. 7.1 Application Information
   2. 7.2 Typical Application
      1. 7.2.1 Typical Schematic for High Frequency (1MHz) Application
      2. 7.2.2 Design Requirements
      3. 7.2.3 Detailed Design Procedure
         1. 7.2.3.1  Custom Design With WEBENCH® Tools
         2. 7.2.3.2  External Components
         3. 7.2.3.3  R3 -RT Resistor
         4. 7.2.3.4  L1-Inductor
         5. 7.2.3.5  C3 (CRAMP)
         6. 7.2.3.6  C9-Output Capacitor
         7. 7.2.3.7  C1-Input Capacitor
         8. 7.2.3.8  C8- VCC Capacitor
         9. 7.2.3.9  C7- BST capacitor
         10. 7.2.3.10 C4 - SS Capacitor
         11. 7.2.3.11 R5, R6 - Feedback Resistor
         12. 7.2.3.12 R1, R2, C2 - SD Pin Components
         13. 7.2.3.13 R4, C5, C6 - Compensation Components
         14. 7.2.3.14 Bias Power Dissipation Reduction
      4. 7.2.4 Application Curves
   3. 7.3 Power Supply Recommendations
   4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
         1. 7.4.1.1 PCB Layout and Thermal Considerations
      2. 7.4.2 Layout Example
9. 8 Device and Documentation Support
   1. 8.1 Device Support
      1. 8.1.1 Developmental Support
         1. 8.1.1.1 Custom Design With WEBENCH® Tools
   2. 8.2 接收文档更新通知
   3. 8.3 支持资源
   4. 8.4 Trademarks
   5. 8.5 静电放电警告
   6. 8.6 术语表
10. 9 Revision History
11. 10Mechanical, Packaging, and Orderable Information

LM25574 42V、0.5A 降压开关稳压器

本资源的原文使用英文撰写。 为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。 为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

下载最新的英语版本