SLLSFW9A April   2024  – July 2024 ISO7741TA-Q1 , ISO7741TB-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin 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  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics Transformer
    10. 5.10 Electrical Characteristics—5V Supply
    11. 5.11 Supply Current Characteristics—5V Supply
    12. 5.12 Electrical Characteristics—3.3V Supply
    13. 5.13 Supply Current Characteristics—3.3V Supply
    14. 5.14 Electrical Characteristics—2.5V Supply 
    15. 5.15 Supply Current Characteristics—2.5V Supply
    16. 5.16 Switching Characteristics—5V Supply
    17. 5.17 Switching Characteristics—3.3V Supply
    18. 5.18 Switching Characteristics—2.5V Supply
    19. 5.19 Insulation Characteristics Curves
    20. 5.20 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Electromagnetic Compatibility (EMC) Considerations
      2. 7.3.2 Push-Pull Converter
      3. 7.3.3 Core Magnetization
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device I/O Schematics
      2. 7.4.2 Start-Up Mode
      3. 7.4.3 Operating Mode
      4. 7.4.4 Spread Spectrum Clocking
  9. 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 Drive Capability
        2. 8.2.2.2 LDO Selection
        3. 8.2.2.3 Diode Selection
        4. 8.2.2.4 Capacitor Selection
        5. 8.2.2.5 Transformer Selection
          1. 8.2.2.5.1 V-t Product Calculation
          2. 8.2.2.5.2 Turns Ratio Estimate
          3. 8.2.2.5.3 Recommended Transformers
      3. 8.2.3 Application Curve
        1. 8.2.3.1 Insulation Lifetime
      4. 8.2.4 System Examples
        1. 8.2.4.1 Higher Output Voltage Designs
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 PCB Material
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DW|16
散热焊盘机械数据 (封装 | 引脚)
订购信息
8.2.2.5.3 Recommended Transformers

Depending on the application, use the minimum configuration in Figure 8-5 or standard configuration in Figure 8-6.

ISO7741TA-Q1 ISO7741TB-Q1 Unregulated Output for Low-Current Loads With Wide Supply Range Figure 8-5 Unregulated Output for Low-Current Loads With Wide Supply Range
ISO7741TA-Q1 ISO7741TB-Q1 Regulated Output for Stable Supplies and High Current Loads Figure 8-6 Regulated Output for Stable Supplies and High Current Loads

The Wurth Electronics Midcom isolation transformers in Table 8-4 are optimized designs for the device, providing high efficiency and small form factor at low-cost.

The 1:1.1 and 1:1.7 turns-ratios are designed for logic applications with wide supply rails and low load currents. These applications operate without LDO, thus achieving further cost-reduction.

Table 8-4 Recommended Isolation Transformers Optimized for the Device
TURNS
RATIO		V × T
(Vμs)		ISOLATION
(VRMS)		DIMENSIONS
(mm)		APPLICATIONLDO(1)ORDER NO.MANUFACTURER
1:1.1 ±2%725006.73 x 10.05 x 4.193.3V → 3.3V, 100mA, ISO7741TB-Q1No760390011Wurth Electronics / Midcom
1:1.1 ±2%115V → 5V, 100mA, ISO7741TB-Q1760390012
1:1.7 ±2%3.3V → 5V, 100mA, ISO7741TB-Q1760390013
1:1.3 ±2%3.3V → 3.3V, 100mA, ISO7741TB-Q1 Yes760390014
1:1.3 ±2%5V → 5V, 100mA, ISO7741TB-Q1760390014
1:2.1 ±2%3.3V → 5V, 100mA, ISO7741TB-Q1760390015
1.23:1 ±2%5V → 3.3V, 100mA, ISO7741TB-Q1750313710
1:1.7 ±2%8.98.3 x 12.6 x 4.13.3V → 3.3V, 1A, ISO7741TB-Q1 750316028
1:2.1 ±2%3.3V → 5V, 1A, ISO7741TB-Q1No750316029
1.3:1 ±2%10.85V → 3.3V, 1A, ISO7741TB-Q1750316030
1:1.1 ±2%8.63.3V → 3.3V, 1A, ISO7741TB-Q1
5V → 5V, 1A, ISO7741TB-Q1		750315371
1:1.1 ±2%1150009.14 x 12.7 x 7.373.3V → 3.3V, 100mA, ISO7741TB-Q1750313734
1:1.1 ±2%5V → 5V, 100mA, ISO7741TB-Q1750313734
1:1.7 ±2%3.3V → 5V, 100mA, ISO7741TB-Q1750313769
1:1.3 ±2%3.3V → 3.3V, 100mA, ISO7741TB-Q1
5V → 5V, 100mA, ISO7741TB-Q1		Yes750313638
1:2.1 ±2%3.3V → 5V, 100mA, ISO7741TB-Q1750313626
1.3:1 ±2%5V → 3.3V, 100mA, ISO7741TB-Q1No750313638
1:1.75 ±2%4112.32 x 15.41 x 11.053.3V → 3.3V, 1A, ISO7741TA-Q1 Yes750316031
1:2 ±2%3.3V → 5V, 1A, ISO7741TA-Q1 No750316032
1.3:1 ±2%425.0V → 3.3V, 1A, ISO7741TA-Q1 750316033
1:1.1 ±2%2312.32 x 15.41 x 11.893.3V → 3.3V, 1A, ISO7741TA-Q1
5V → 5V, 1A, ISO7741TA-Q1 		750315240
1:3.5 ±2% 9 9.14 x 12.95 x 7.62

5V → 17.5V, 100mA,ISO7741TB-Q1

750342879
1:3.9 ±2% 9.17 x 12.7 x 7.62

5V → 19.5V, 100mA,ISO7741TB-Q1

750343725
1:3.75 ±2% 9.5 2500 8.3 x 12.6 x 4.1

5V → 18.75V, 100mA,ISO7741TB-Q1

78931812518
1:4.75 ±2%

5V → 23.75V, 100mA,ISO7741TB-Q1

78931812523
1:2.5 ±2%

5V → 12.5V, 200mA,ISO7741TB-Q1

78931812512
1:3.13 ±2%

5V → 15.65V, 200mA,ISO7741TB-Q1

78931812515
1:3.5 ±2% 16 6000 9.14 x 12.7 x 7.62

5V → 17.5V, 100mA,ISO7741TB-Q1

750320340
1:1.3 ±3%11500010.4 x 12.2 x 6.13.3V → 3.3V, 300mA, ISO7741TB-Q1
5V → 5V, 300mA, ISO7741TB-Q1 		NoHCT-SM-1.3-8-2Bourns
1:1.5 ±3%34.4250010 x 12.07 x 5.973.3V → 3.3V, 1A, ISO7741TB-Q1
5V → 5V, 1A, ISO7741TA/B-Q1		YesDA2303-ALCoilcraft
1:2.2 ±3%21.5250010 x 12.07 x 5.973.3V → 5V, 1A, ISO7741TA/B-Q1DA2304-AL
(1) For configurations with LDO, a higher voltage than the required output voltage is generated, to allow for LDO drop-out. Figures show the voltage and efficiency at the LDO input.
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