SI88420ED-ASR

Overview

The SI88420ED-ASR is a dual-channel digital isolator with an integrated isolated DC-DC converter, manufactured by Skyworks Solutions. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides 5000 Vrms isolation via capacitive coupling and features a typical propagation delay of 18 ns. Designed for surface-mount installation in SOIC-Wide-16 packages, it functions reliably across temperatures from -40 °C to +125 °C.

Feature Summary

• Integrates two unidirectional digital isolation channels with an on-chip isolated DC-DC converter providing regulated output voltages.
• Features fully-integrated secondary sensing feedback controlled conversion with dithering for low electromagnetic interference emissions.
• Includes high transient immunity capabilities and utilizes RF on/off keying modulation for robust noise immunity.

Applications

• Industrial automation systems
• Hybrid electric and electric vehicles
• Isolated power supplies

Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm package type and tape-and-reel specifications. Confirm current lifecycle status as components may be subject to change without notice. Ensure compliance with RoHS requirements and relevant safety certifications such as UL, CSA, and VDE before integration into final designs.

Selection Notes

Select this component when a combined signal isolation and isolated power generation solution is required in a compact footprint. Verify that the external transformer and passive components match the recommended specifications for the intended input and output voltage configurations. Consider the thermal management requirements associated with peak output power levels up to 5 W.

Part Context

This part belongs to the Si88x2x family of dual digital isolators with DC-DC converters. The series integrates proven digital isolation technology with flyback topology controllers. Other variants in the family include different channel counts and pin configurations, such as the Si88421 and Si88422, which offer variations in shutdown options and packaging.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions or authorized distributors for potential alternative devices within the same product family or comparable industry offerings.