ZHCSI53A May   2018  – November 2018 LM5122ZA

PRODUCTION DATA.  

1. 1 特性
2. 2 应用
3. 3 说明
   1.     Device Images
      1.      简化应用示意图
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  Undervoltage Lockout (UVLO)
      2. 7.3.2  High-Voltage VCC Regulator
      3. 7.3.3  Oscillator
      4. 7.3.4  Slope Compensation
      5. 7.3.5  Error Amplifier
      6. 7.3.6  PWM Comparator
      7. 7.3.7  Soft Start
      8. 7.3.8  HO and LO Drivers
      9. 7.3.9  Bypass Operation (VOUT = VIN)
      10. 7.3.10 Cycle-by-Cycle Current Limit
      11. 7.3.11 Clock Synchronization
      12. 7.3.12 Maximum Duty Cycle
      13. 7.3.13 Thermal Protection
   4. 7.4 Device Functional Modes
      1. 7.4.1 MODE Control (Forced-PWM Mode and Diode-Emulation Mode)
      2. 7.4.2 MODE Control (Skip-Cycle Mode and Pulse-Skipping Mode)
      3. 7.4.3 Hiccup-Mode Overload Protection
      4. 7.4.4 Slave Mode and SYNCOUT
8. 8 Application and Implementation
   1. 8.1 Application Information
      1. 8.1.1 Feedback Compensation
      2. 8.1.2 Sub-Harmonic Oscillation
      3. 8.1.3 Interleaved Boost Configuration
      4. 8.1.4 DCR Sensing
      5. 8.1.5 Output Overvoltage Protection
      6. 8.1.6 SEPIC Converter Simplified Schematic
      7. 8.1.7 Non-Isolated Synchronous Flyback Converter Simplified Schematic
      8. 8.1.8 Negative to Positive Conversion
   2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
         1. 8.2.2.1  Timing Resistor RT
         2. 8.2.2.2  UVLO Divider RUV2, RUV1
         3. 8.2.2.3  Input Inductor LIN
         4. 8.2.2.4  Current Sense Resistor RS
         5. 8.2.2.5  Current Sense Filter RCSFP, RCSFN, CCS
         6. 8.2.2.6  Slope Compensation Resistor RSLOPE
         7. 8.2.2.7  Output Capacitor COUT
         8. 8.2.2.8  Input Capacitor CIN
         9. 8.2.2.9  VIN Filter RVIN, CVIN
         10. 8.2.2.10 Bootstrap Capacitor CBST and Boost Diode DBST
         11. 8.2.2.11 VCC Capacitor CVCC
         12. 8.2.2.12 Output Voltage Divider RFB1, RFB2
         13. 8.2.2.13 Soft-Start Capacitor CSS
         14. 8.2.2.14 Restart Capacitor CRES
         15. 8.2.2.15 Low-Side Power Switch QL
         16. 8.2.2.16 High-Side Power Switch QH and Additional Parallel Schottky Diode
         17. 8.2.2.17 Snubber Components
         18. 8.2.2.18 Loop Compensation Components CCOMP, RCOMP, CHF
      3. 8.2.3 Application Curves
9. 9 Power Supply Recommendations
10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
11. 11器件和文档支持
    1. 11.1 接收文档更新通知
    2. 11.2 社区资源
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 术语表
12. 12机械、封装和可订购信息