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.

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 (pending)

IEC 60747-5-2 (VDE 0884, Part 2)

VIORM = 560 V peak

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