ISOW7821FDWE

Overview

The ISOW7821FDWE is a high-performance, reinforced dual-channel digital isolator from Texas Instruments. It integrates a high-efficiency DC-DC converter with an on-chip transformer to provide isolated power and signal transmission. The device supports data rates up to 100 Mbps and features a robust isolation barrier rated at 5000 VRMS. It operates with a wide supply voltage range of 3 V to 5.5 V and maintains functionality across an extended temperature range of –55°C to 125°C. Common Mode Transient Immunity (CMTI) is specified at a minimum of 100 kV/µs.

Feature Summary

• Integrates a high-efficiency DC-DC converter with an on-chip transformer for isolated power delivery
• Provides reinforced electrical isolation with a 5000 VRMS rating
• Supports high-speed data transmission at rates up to 100 Mbps
• Features robust immunity to common-mode transients

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety barriers
• Data acquisition systems with high noise environments
• Power electronics control circuits

Procurement Notes

Verify the complete part number including suffixes such as 'FDWE' or 'FDWER' to ensure correct packaging and tape-and-reel specifications. Confirm that the integrated DC-DC converter meets the specific power requirements of the target application. Ensure compatibility with the required isolation voltage standards for the intended market. Check for any specific ordering information regarding carrier material reports or documentation updates from Texas Instruments.

Selection Notes

Select this component when both signal isolation and isolated power generation are required in a single package. The integrated transformer eliminates the need for external magnetics, reducing board space. Consider the 100 Mbps data rate for high-speed communication needs. Verify that the 5000 VRMS isolation level satisfies the safety regulations for the specific application environment.

Part Context

This device belongs to the ISOW7821 family of digital isolators. It differs from non-integrated variants by including the on-chip transformer and DC-DC converter. The 'FDWE' suffix indicates a specific package type and reel quantity. It serves as a solution for applications demanding high reliability and reduced component count compared to discrete isolation solutions.

Replacement Considerations

Direct replacements must match the 5000 VRMS rating and integrated DC-DC converter feature. Compare pinouts and thermal characteristics carefully. Verify that alternative devices support the same 100 Mbps data rate and CMTI specifications. Consult Texas Instruments for qualified alternatives if exact matches are unavailable.