ISOW7821DWE

Overview

The ISOW7821DWE is a high-performance, dual-channel reinforced digital isolator from Texas Instruments featuring an integrated high-efficiency DC-DC converter with an on-chip transformer. It supports data rates up to 100 Mbps and provides robust isolation barriers with a projected lifetime exceeding 100 years at 1 kVRMS working voltage. The device blocks high voltage, isolates grounds, and prevents noise currents on data buses. It offers configurable input and output voltages and can deliver up to 650mW of isolated power, eliminating the need for external isolated power supplies in many applications.

Feature Summary

• Integrated high-efficiency DC-DC converter with on-chip transformer
• Reinforced dual-channel digital isolation barrier
• High-speed data transmission capability
• Configurable input and output voltage options

Applications

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

Procurement Notes

Verify the specific suffix (DWE) matches your package and temperature requirements. Confirm that the integrated DC-DC converter meets your power budget needs. Ensure compatibility with your system's logic levels and signal integrity requirements before procurement.

Selection Notes

Select this component when reinforced isolation and integrated power conversion are required in a single package. Consider the 100 Mbps data rate limit and the 650mW power delivery capability. Evaluate if the on-chip transformer meets your efficiency and size constraints compared to discrete solutions.

Part Context

This part belongs to TI's ISOW78xx family of high-performance digital isolators. It combines isolation and power management functions, reducing bill-of-materials count and board space. The DWE suffix indicates a specific package type suitable for surface-mount assembly.

Replacement Considerations

Check for direct pin-to-pin replacements within the ISOW78xx series or other TI isolated DC-DC converters with similar performance characteristics. Verify electrical parameters and isolation ratings match your design requirements.