GENERAL DESCRIPTION
The ADuM5401/ADuM5402/ADuM5403/ADuM54041 are quad-
channel digital isolators with isoPower®, an integrated, isolated dc-
to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to 500 mW of
regulated, isolated power at either 5.0 V or 3.3 V from a 5.0 V input supply, or at 3.3 V from a 3.3 V supply at the power levels shown in Table 1. These devices eliminate the need for a separate, isolated
dc-to-dc converter in low power, isolated designs. The iCoupler
chip scale transformer technology is used to isolate the logic
signals and for the power and feedback paths in the dc-to-dc
converter. The result is a small form factor, total isolation
solution.
The ADuM5401/ADuM5402/ADuM5403/ADuM5404 isolators
provide four independent isolation channels in a variety of
channel configurations and data rates (see the Ordering Guide for more information).
isoPower uses high frequency switching elements to transfer
power through its transformer. Special care must be taken
during printed circuit board (PCB) layout to meet emissions
standards. See the AN-0971 Application Note for board layout recommendations.

FEATURES
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5.0 V output
Up to 500 mW output power
Quad dc-to-25 Mbps (NRZ) signal isolation channels 16-lead SOIC package with 7.6 mm creepage High temperature operation: 105°C maximum
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A
VDE certificate of conformity IEC 60747-5-2 (VDE 0884, Part 2)
VIORM = 560 V peak CQC certification per GB4943.1-2011

APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply start-up bias and gate drives
Isolated sensor interfaces Industrial PLCs