SI88441BC-IS

Overview

The SI88441BC-IS is a Skyworks Solutions digital isolator featuring four unidirectional channels and an integrated DC-DC converter. It provides 5000 Vrms isolation voltage with capacitive coupling technology. The device supports data rates up to 100 Mb/s, with a typical propagation delay of 18 ns and rise/fall times of 2.5 ns. Operating on a supply voltage range of 3 V to 5.5 V, it functions within temperatures from -40°C to +125°C. Packaged in a 20-SOIC (7.50 mm wide) format, it includes high common-mode transient immunity.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust 5000 Vrms insulation via capacitive coupling
• Delivers high-speed signal transmission at 100 Mb/s

Applications

• Industrial automation systems requiring galvanic isolation
• Power conversion circuits with isolated gate drive requirements
• Medical equipment needing reinforced safety isolation

Procurement Notes

Verify the specific suffix 'IS' against the manufacturer's official datasheet to confirm package type and thermal characteristics. Ensure the integrated DC-DC converter meets the target application's power budget. Check for AEC-Q100 qualification if automotive compliance is required, as this variant may differ from other series members. Confirm lead time availability through authorized distributors.

Selection Notes

Select this component when both signal isolation and isolated power delivery are needed in a single package. Compare channel count and isolation voltage ratings against system requirements. Consider the 20-SOIC footprint for PCB layout constraints. Evaluate the integrated DC-DC converter efficiency versus external solutions for space optimization.

Part Context

Part of the Si884xx family of digital isolators with integrated converters. This series combines signal isolation and power management to reduce bill-of-materials complexity. The SI88441BC-IS specifically offers four forward channels and one reverse channel configuration within the 20-pin SOIC package.

Replacement Considerations

SI88441BD-ISR: Similar specifications but different packaging (Reel vs Tube). Verify pinout compatibility and thermal performance differences before substitution.