SI83404BCA-IFR

Overview

The SI83404BCA-IFR is a four-channel isolated smart switch from Skyworks Solutions. It integrates high-side and low-side power switches with digital isolation. Key electrical parameters include a maximum on-resistance of 280 milliohms, an output current capability of 700 mA, and a current limit of 880 mA. The device operates within a supply voltage range of 2.25 V to 32 V. Switching characteristics feature a maximum turn-on time of 2.3 microseconds and a maximum turn-off time of 2.9 microseconds. It supports surface-mount installation and functions across temperatures from -40°C to +125°C.

Feature Summary

• Integrates four isolated high-side or low-side power switches with low on-resistance for efficient power distribution.
• Provides robust digital isolation between control logic and power stages to ensure system safety and noise immunity.
• Features fast switching times and programmable current limiting to protect loads and prevent fault propagation.

Applications

• Industrial automation systems requiring isolated power distribution
• Automotive electronic control units (ECUs) for load management
• Data center infrastructure for server blade power switching

Procurement Notes

Verify the specific suffix 'IFR' against the manufacturer's official datasheet to confirm tape-and-reel packaging and exact pinout configuration. Ensure the ordering part number matches the required thermal pad and isolation voltage specifications for your design. Cross-reference the RoHS compliance status directly with the latest product change notification documents provided by Skyworks Solutions Inc.

Selection Notes

Select this component when designing circuits that require multiple isolated outputs with integrated protection features. Compare the 280 milliohm on-resistance against alternative devices to evaluate conduction losses in high-current applications. Consider the wide input voltage range and operating temperature span to ensure compatibility with harsh industrial or automotive environments without additional conditioning components.

Part Context

This device belongs to the Si834x family of isolated smart switches. The family provides up to four channels of power switching with integrated digital isolation. These components are designed to replace traditional discrete solutions, reducing board space and improving reliability in power distribution networks for industrial and automotive markets.

Replacement Considerations

The SI83404AAA-IFR is a public confirmed substitute within the same series. Verify if the lower on-resistance variant meets the thermal requirements of the application. Check for identical pinouts and isolation ratings before substitution.