ADUM3473CRSZ

Overview

The ADUM3473CRSZ is a quad-channel digital isolator from Analog Devices, featuring an integrated transformer driver for PWM controller applications. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. The device provides 2500 Vrms isolation voltage via magnetic coupling technology. Key electrical parameters include a propagation delay of 45 ns and a pulse width distortion of 6 µs. It functions reliably across an industrial temperature range of -40°C to +105°C and is housed in a 20-lead SSOP package.

Feature Summary

• Integrates a high-speed transformer driver alongside four isolated channels
• Provides bidirectional signal transmission with magnetic coupling isolation
• Supports PWM controller interfaces with low propagation delay

Applications

• PWM controller isolation in power supplies
• Industrial motor drive systems
• Isolated gate driver circuits

Procurement Notes

Verify the specific suffix 'CRSZ' to confirm the tube packaging variant, as other suffixes indicate different packing methods like reels. Confirm RoHS compliance status through official documentation before procurement. Check current availability as distribution may vary by region. Ensure the bidirectional channel configuration matches the design requirements, distinguishing it from unidirectional variants.

Selection Notes

Select this component when bidirectional communication is required between the primary and secondary sides of a power stage. The integrated transformer driver simplifies the design by eliminating external driver components. Compare propagation delay specifications against system timing constraints. Verify that the 2500 Vrms isolation rating meets the safety standards of the target application environment.

Part Context

This part belongs to the ADuM347x series of digital isolators designed specifically for driving transformers in isolated power conversion topologies. It combines standard digital isolation capabilities with specialized driver circuitry. The series offers various channel configurations and packaging options to suit different board space and isolation voltage requirements.

Replacement Considerations

Check for ADUM3473CRSZ-RL7 if reel packaging is preferred instead of tubes. Verify if ADUM3473ARZ or other series members offer compatible pinouts but different performance metrics.