ADUM3472CRSZ

Overview

The ADUM3472CRSZ is a general-purpose digital isolator from Analog Devices, featuring four independent channels with an integrated transformer driver. It utilizes iCoupler magnetic coupling technology to provide electrical isolation. The device operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. Key electrical specifications include a 2500 Vrms isolation voltage, a common-mode transient immunity (CMTI) of 25 kV/µs, and a maximum propagation delay of 60 ns. It functions reliably across an industrial temperature range of -40°C to +105°C.

Feature Summary

• Integrates a high-speed PWM controller and transformer driver alongside four isolated channels for complete gate drive solutions.
• Employs iCoupler magnetic coupling technology to achieve robust signal transmission without external magnetics.
• Provides high common-mode transient immunity to ensure reliable operation in noisy switching environments.

Applications

• Isolated gate drive circuits for power MOSFETs and IGBTs
• PWM control loops in isolated DC-DC converters
• Industrial motor control systems requiring galvanic isolation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'CRSZ' matches the required SSOP-20 package and lead-free RoHS compliance status. Check current availability as supply may be limited. Ensure storage conditions adhere to moisture sensitivity levels defined in the datasheet prior to assembly.

Selection Notes

Select this component when a combined isolated controller and driver solution is required to reduce board space. It is suitable for applications needing bidirectional or unidirectional signal isolation with integrated power stage driving capabilities. Compare against standard isolators if separate controller and driver ICs are preferred for modular design flexibility.

Part Context

This part belongs to the ADUM347x series of digital isolators from Analog Devices. The series integrates isolation barriers with functional blocks like PWM controllers. The ADUM3472 variant specifically includes the transformer driver, distinguishing it from variants that offer only isolation channels. It is part of the broader iCoupler product family utilizing silicon chip technology.

Replacement Considerations

Direct substitutes include other parts within the ADUM347x family, such as the ADUM3470CRSZ or ADUM3471CRSZ, depending on whether the integrated transformer driver functionality is required. Verify pin compatibility and electrical parameters before substitution.