ZHCSE71I september   2015  – august 2023 SN6505A , SN6505B

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Revision History
  6. Pin Configuration and Functions
  7. 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 Timing Requirements
    7. 6.7 Typical Characteristics, SN6505A
    8. 6.8 Typical Characteristics, SN6505B
  8. Parameter Measurement Information
  9. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Push-Pull Converter
      2. 8.3.2 Core Magnetization
    4. 8.4 Device Functional Modes
      1. 8.4.1 Start-Up Mode
        1. 8.4.1.1 Soft-Start
      2. 8.4.2 Operating Mode
      3. 8.4.3 Shutdown-Mode
      4. 8.4.4 Spread Spectrum Clocking
      5. 8.4.5 External Clock Mode
  10. 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 Drive Capability
        2. 9.2.2.2 LDO Selection
        3. 9.2.2.3 Diode Selection
        4. 9.2.2.4 Capacitor Selection
        5. 9.2.2.5 Transformer Selection
          1. 9.2.2.5.1 V-t Product Calculation
          2. 9.2.2.5.2 Turns Ratio Estimate
          3. 9.2.2.5.3 Recommended Transformers
      3. 9.2.3 Application Curves
      4. 9.2.4 System Examples
        1. 9.2.4.1 Higher Output Voltage Designs
        2. 9.2.4.2 Application Circuits
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Support
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
  14. 13Mechanical, Packaging, and Orderable Information

Typical Characteristics, SN6505A

GUID-7D8F69A9-9DBA-4B64-8B50-C06E777D90FA-low.gif
SN6505A + Wurth 750315240
Figure 6-1 Output Voltage vs Load Current
GUID-6907DAA3-D7BA-4BD7-9467-0AC4A71B456F-low.gif
SN6505A + Wurth 750316031VCC = 3.3 V
Figure 6-3 Output Voltage vs Load Current
GUID-CE887A28-72AC-488D-B5E7-8AE487D6DE3E-low.gif
SN6505A + Wurth 750316032VCC = 3.3 V
Figure 6-5 Output Voltage vs Load Current
GUID-A63F42C1-0BEE-4695-AE69-26115BAC90CD-low.gif
SN6505A + Wurth 750316033VCC = 5 V
Figure 6-7 Output Voltage vs Load Current
GUID-E12BBA65-366C-4F42-BFA1-A3644416B35E-low.gif
Figure 6-9 Frequency vs Free-Air Temperature
GUID-FF06602A-5893-4115-A3CC-8251BD759BC5-low.gif
SN6505A + Wurth 750315240
Figure 6-2 Efficiency vs Load Current
GUID-08A40A89-EBA6-4D36-90E8-AE2C14E3A01F-low.gif
SN6505A + Wurth 750316031VCC = 3.3 V
Figure 6-4 Efficiency vs Load Current
GUID-7DD81B87-1726-43EA-B773-4D21A54D406E-low.gif
SN6505A + Wurth 750316032VCC = 3.3 V
Figure 6-6 Efficiency vs Load Current
GUID-FD835C82-35EA-466C-9D38-9E93EF6BBEDA-low.gif
SN6505A + Wurth 750316033VCC = 5 V
Figure 6-8 Efficiency vs Load Current
GUID-1CDAD1F2-1E1D-4994-9BAE-EE840DCB5887-low.gif
Figure 6-10 Current vs External Frequency