ZHCSGH0J April   2008  – June 2017 LM5118

PRODUCTION DATA.  

1. 1 特性
2. 2 应用
3. 3 说明
4. 4 修订历史记录
5. 5 Pin Configuration and 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 UVLO
      2. 7.3.2 Oscillator and Sync Capability
      3. 7.3.3 Error Amplifier and PWM Comparator
      4. 7.3.4 Ramp Generator
      5. 7.3.5 Current Limit
      6. 7.3.6 Maximum Duty Cycle
      7. 7.3.7 Soft Start
      8. 7.3.8 HO Output
      9. 7.3.9 Thermal Protection
   4. 7.4 Device Functional Modes
      1. 7.4.1 Buck Mode Operation: VIN > VOUT
      2. 7.4.2 Buck-Boost Mode Operation: VIN ≊ VOUT
      3. 7.4.3 High Voltage Start-Up Regulator
      4. 7.4.4 Enable
8. 8 Application and Implementation
   1. 8.1 Application Information
   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  R7 = RT
         3. 8.2.2.3  Inductor Selection, L1
         4. 8.2.2.4  R13 = RSENSE
         5. 8.2.2.5  C15 = CRAMP
         6. 8.2.2.6  Inductor Current Limit Calculation
         7. 8.2.2.7  C9 - C12 = Output Capacitors
         8. 8.2.2.8  D1
         9. 8.2.2.9  D4
         10. 8.2.2.10 C1 - C5 = Input Capacitor
         11. 8.2.2.11 C20
         12. 8.2.2.12 C8
         13. 8.2.2.13 C16 = CSS
         14. 8.2.2.14 R8, R9
         15. 8.2.2.15 R1, R3, C21
         16. 8.2.2.16 R2
         17. 8.2.2.17 Snubber
         18. 8.2.2.18 Error Amplifier Configuration
             1. 8.2.2.18.1 R4, C18, C17
      3. 8.2.3 Application Curves
9. 9 Power Supply Recommendations
   1. 9.1 Thermal Considerations
   2. 9.2 Bias Power Dissipation Reduction
10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
11. 11器件和文档支持
    1. 11.1 器件支持
       1. 11.1.1 开发支持
          1. 11.1.1.1 使用 WEBENCH® 工具创建定制设计
    2. 11.2 商标
    3. 11.3 静电放电警告
    4. 11.4 Glossary
12. 12机械、封装和可订购信息