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, SN6505B

GUID-124E382D-3ABE-4665-8281-E414FEB813CE-low.gif
SN6505B + Wurth 750315371
Figure 6-11 Output Voltage vs Load Current
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SN6505B + Wurth 760390011 VCC = 3.3 V
Figure 6-13 Output Voltage vs Load Current
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SN6505B + Wurth 760390012 VCC = 5 V
Figure 6-15 Output Voltage vs Load Current
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SN6505B + Wurth 760390013 VCC = 3.3 V
Figure 6-17 Output Voltage vs Load Current
GUID-3E372606-C327-49A3-85EE-AAF740500739-low.gif
SN6505B + Wurth 760390014 VCC = 3.3 V
Figure 6-19 Output Voltage vs Load Current
GUID-817FC6D1-1FDE-4953-AB95-3E8E77C00B6E-low.gif
SN6505B + Wurth 760390014 VCC = 5 V
Figure 6-21 Output Voltage vs Load Current
GUID-AE846B59-6F2B-4D92-A65D-98A1AA2B3451-low.gif
SN6505B + Wurth 760390015 VCC = 3.3 V
Figure 6-23 Output Voltage vs Load Current
GUID-93F55F4B-19B3-4DCD-981D-8DBF3DFF3DF0-low.gif
SN6505B + Wurth 750316028 VCC = 3.3 V
Figure 6-25 Output Voltage vs Load Current
GUID-14A62C20-F581-470A-9E77-48CBB54B740F-low.gif
SN6505B + Wurth 750316029 VCC = 3.3 V
Figure 6-27 Output Voltage vs Load Current
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SN6505B + Wurth 7503160030 VCC = 5 V
Figure 6-29 Output Voltage vs Load Current
GUID-20230707-SS0I-KGPD-DHPF-KZ82HZKF8RLL-low.svg
SN6505B + Wurth 750342879 VCC= 5V
Figure 6-31 Output Voltage vs Load Current
GUID-20230707-SS0I-G5F3-V5H3-BL3M2K1JCX0C-low.svg
SN6505B + Wurth 750320340 VCC= 5V
Figure 6-33 Output Voltage vs Load Current
GUID-20230707-SS0I-DQWN-T8GJ-5DZKHZL9BTF9-low.svg
SN6505B + Wurth 78931812518 VCC= 5V
Figure 6-35 Output Voltage vs Load Current
GUID-20230707-SS0I-NRXN-7VNV-0R2JW1WHWW5C-low.svg
SN6505B + Wurth 750343725 VCC= 5V
Figure 6-37 Output Voltage vs Load Current
GUID-20230707-SS0I-VS1R-DLNB-1KZ1RD0QHHZN-low.svg
SN6505B + Wurth 78931812523 VCC= 5V
Figure 6-39 Output Voltage vs Load Current
GUID-20230707-SS0I-T4QS-KP2C-1VDSN0K9CQXL-low.svg
SN6505B + Wurth 78931812512 VCC= 5V
Figure 6-41 Output Voltage vs Load Current
GUID-20230707-SS0I-XSN4-G2VK-B2LJJZFPTNGG-low.svg
SN6505B + Wurth 78931812515 VCC= 5V
Figure 6-43 Output Voltage vs Load Current
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Figure 6-45 Frequency vs Free-Air Temperature
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Figure 6-47 Scope Capture of SN6505 Switching from External to Internal Clock
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SN6505B + Wurth 750315371
Figure 6-12 Efficiency vs Load Current
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SN6505B + Wurth 760390011 VCC = 3.3 V
Figure 6-14 Efficiency vs Load Current
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SN6505B + Wurth 760390012 VCC = 5 V
Figure 6-16 Efficiency vs Load Current
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SN6505B + Wurth 760390013 VCC = 3.3 V
Figure 6-18 Efficiency vs Load Current
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SN6505B + Wurth 760390014 VCC = 3.3 V
Figure 6-20 Efficiency vs Load Current
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SN6505B + Wurth 760390014 VCC = 5 V
Figure 6-22 Efficiency vs Load Current
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SN6505B + Wurth 760390015 VCC = 3.3 V
Figure 6-24 Efficiency vs Load Current
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SN6505B + Wurth 750316028 VCC = 3.3 V
Figure 6-26 Efficiency vs Load Current
GUID-7CB0BAC0-2CEA-4E43-80E8-4CBD2AD9F697-low.gif
SN6505B + Wurth 750316029 VCC = 3.3 V
Figure 6-28 Efficiency vs Load Current
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SN6505B + Wurth 7503160030 VCC = 5 V
Figure 6-30 Efficiency vs Load Current
GUID-20230707-SS0I-CMZS-FKC7-VC50J9BX3FX0-low.svg
SN6505B + Wurth 750342879 VCC= 5V
Figure 6-32 Efficiency vs Load Current
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SN6505B + Wurth 750320340 VCC= 5V
Figure 6-34 Efficiency vs Load Current
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SN6505B + Wurth 78931812518 VCC= 5V
Figure 6-36 Efficiency vs Load Current
GUID-20230707-SS0I-TM0F-MKRB-PP4WFFDJ3FXG-low.svg
SN6505B + Wurth 750343725 VCC= 5V
Figure 6-38 Efficiency vs Load Current
GUID-20230707-SS0I-R4DP-PTDM-HRPNRWPV5WVC-low.svg
SN6505B + Wurth 78931812523 VCC= 5V
Figure 6-40 Efficiency vs Load Current
GUID-20230707-SS0I-CNVZ-NQSG-PFSR0X84R5BK-low.svg
SN6505B + Wurth 78931812512 VCC= 5V
Figure 6-42 Efficiency vs Load Current
GUID-20230707-SS0I-XZVS-9DXH-8RCDMVPSLPMQ-low.svg
SN6505B + Wurth 78931812515 VCC= 5V
Figure 6-44 Efficiency vs Load Current
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Figure 6-46 Current vs External Frequency