SI83404ABA-IF

Overview

The SI83404ABA-IF is a four-channel isolated smart switch from Skyworks Solutions, designed for power distribution applications. It integrates high-side and low-side N-channel MOSFETs with digital isolation. Key electrical parameters include a continuous output current of 700 mA per channel and a peak current limit of 880 mA. The device features a maximum on-resistance of 280 mOhms. Operating supply voltage ranges from 2.25 V to 32 V. Switching characteristics include a maximum turn-on time of 2.3 µs and a maximum turn-off time of 2.9 µs. It operates within a temperature range of -40°C to +125°C and is housed in a 32-lead DFN package.

Feature Summary

• Integrates four independent channels combining high-side and low-side switching capabilities with integrated digital isolation.

Applications

• Industrial power distribution systems
• Automotive electronic control units
• Isolated load switching in communication infrastructure

Procurement Notes

Verify the specific suffix 'ABA' against official Skyworks documentation to confirm pinout and isolation specifications. Ensure compatibility with the required operating voltage range of 2.25 V to 32 V. Confirm thermal management requirements for the DFN-32 package under maximum load conditions. Check for moisture sensitivity level compliance during storage and handling.

Selection Notes

Select this component when four isolated channels are required for simultaneous high-side and low-side control. Compare on-resistance and switching speeds against alternative models if lower dissipation or faster response is needed. Verify that the input logic levels match the controlling microcontroller or FPGA outputs. Consider the 32-DFN footprint constraints during PCB layout design.

Part Context

This part belongs to the Si834xx family of isolated smart switches. It provides a compact solution for replacing discrete MOSFETs and isolators in space-constrained designs. The family offers various channel counts and package options to suit different power distribution needs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

What is the maximum operating voltage for the SI83404ABA-IF?

The device supports an operating supply voltage range from 2.25 V to 32 V.

Does the SI83404ABA-IF support both high-side and low-side switching?

Yes, it integrates both high-side and low-side N-channel MOSFETs for each of its four channels.