SLLSFF7B May   2021  – August 2026 ISOW1044

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety-Related Certifications
    8. 6.8  Safety Limiting Values
    9. 6.9  Electrical Characteristics
    10. 6.10 Supply Current Characteristics
    11. 6.11 Switching Characteristics
    12. 6.12 Insulation Characteristics Curves
    13. 6.13 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Power Isolation
    3. 8.3 Signal Isolation
    4. 8.4 CAN Transceiver
    5. 8.5 Remote Wake Request Using Wake-Up Pattern (WUP) in Standby Mode
    6. 8.6 Functional Block Diagram
    7. 8.7 Feature Description
      1. 8.7.1 CAN Bus States
      2. 8.7.2 Digital Inputs and Outputs: TXD (Input) and RXD (Output)
      3. 8.7.3 TXD Dominant Timeout (DTO)
      4. 8.7.4 Power-Up and Power-Down Behavior
      5. 8.7.5 Protection Features
      6. 8.7.6 Floating Pins, Unpowered Device
      7. 8.7.7 Glitch-Free Power Up and Power Down
    8. 8.8 Device Functional Modes
    9. 8.9 Device I/O Schematics
  10. 9 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 Bus Loading, Length and Number of Nodes
        2. 9.2.2.2 CAN Termination
      3. 9.2.3 Application Curve
        1. 9.2.3.1 Insulation Lifetime
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

9.3 Power Supply Recommendations

To make sure that operation is reliable at all data rates and supply voltages, adequate decoupling capacitors must be located as close to supply pins as possible. Power converter input VDD and output VISOOUT supply pins must have high frequency ceramic capacitors 10nF and bulk capacitors 10μF at least close to the pins. Signal path supply pins, VIO and VISOIN, must have 100nF or higher value ceramic bypass capacitors close to device pins. ISOW10144 can consume typical peak pulse currents of up to 250mA under fully loaded conditions for short durations (10s of µs) from the power source that is powering VDD of ISOW1044. Please make sure the current limit of upstream power device is at least 300mA typical.