Analog Devices Inc. ADuM5020 & ADuM5028 isoPower DC-to-DC Converters

Analog Devices Inc. ADuM5020 and ADuM5028 isoPower® DC-to-DC Converters are low-emission, isolated DC-to-DC Converters based on iCoupler® technology. The ADuM5020 and ADuM5028 Converters provide regulated, isolated power that is below CISPR22 Class B limits at full load on a 2-layer Printed Circuit Board (PCB) with ferrites.

The ADuM5020 and ADuM5028 eliminate the need to design and build isolated DC-DC Converters for applications up to 500mW. The iCoupler chip scale transformer technology is used for the magnetic components of the DC-to-DC converter. The result is a small form factor, isolated solution, ideal for space constrained applications.

The ADuM5020 and ADuM5028 are available in two different package variants. The ADuM5020 is offered in a wide body, 16-lead SOIC_W package, and the ADuM5028 is offered in a compact 8-lead, wide body SOIC_IC.


  • Meets CISPR22 Class B emissions limits
  • Output current
    • 100mA (ADuM5020)
    • 60mA (ADuM5028)
  • 0.5V to 7.0V supply voltage range
  • -40°C to +125°C operating temperature range
  • Package
    • 16-lead SOIC_W package with 7.8mm minimum creepage (ADuM5020)
    • 8-lead SOIC_IC package with 8.3mm minimum creepage (ADuM5028)
  • Safety and regulatory approvals
    • UL recognition (pending), 3000Vrms for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A (pending)
    • VDE Certificate of Conformity (pending)
      • VDE V 0884-10
      • 565V peak VIORM
    • CQC Certification per GB4943.1-2011
    • RoHS compliant


  • RS-485/RS-422/CAN transceiver power
  • Power supply start-up bias and gate drives
  • Isolated sensor interfaces
  • Industrial programmable logic controllers (PLCs)


Functional Block Diagram

PIn Configurations

Published: 2018-08-08 | Updated: 2023-02-22