SI83414BCA-IF

Overview

The SI83414BCA-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 outputs with a maximum continuous output current of 700 mA per channel and an 880 mA current limit. The device features a maximum on-resistance of 280 mΩ, ensuring efficient power delivery. Operating voltage ranges from 2.25 V to 32 V, supporting diverse system requirements. Switching performance includes a maximum turn-on time of 2.1 µs and a maximum blanking time of 2.2 µs. It operates within a temperature range of -40°C to +125°C and is housed in a 32-DFN (9x9) surface-mount package.

Feature Summary

• Integrates four independent isolated smart switches with parallel input configuration for simplified control logic.
• Provides comprehensive protection mechanisms including overcurrent limiting and thermal shutdown to safeguard connected loads.
• Features integrated status reporting and low-voltage detection capabilities for real-time system monitoring and diagnostics.

Applications

• Industrial automation systems requiring isolated load switching
• Automotive electronic control units (ECUs) for peripheral device management
• Power distribution networks in telecommunications infrastructure

Procurement Notes

Verify the specific suffix 'BCA' against official Skyworks documentation to confirm pinout compatibility and package dimensions. Ensure the operating environment remains within the specified -40°C to +125°C range to maintain reliability. Confirm that the 32-DFN footprint matches your PCB layout constraints. Cross-reference the datasheet for any recent revisions that may affect electrical characteristics or ordering information.

Selection Notes

Select this component when four-channel isolation is required in a compact form factor. The 700 mA output current suits moderate-load applications, while the 280 mΩ on-resistance minimizes power loss. Consider the 2.25 V to 32 V supply range for flexibility in various voltage domains. The integrated status feedback simplifies fault detection compared to discrete solutions. Evaluate thermal management needs given the dense 9x9 mm package.

Part Context

This part belongs to the Si834xx series of isolated smart switches, which combine power switching with digital isolation in a single IC. The series is designed to replace traditional relay and discrete MOSFET solutions, offering higher reliability and smaller board space. The BCA variant specifically denotes the 32-DFN package option, distinguishing it from other package types like the AAA variant.

Replacement Considerations

The SI83404AAA-IF is listed as a parameter-equivalent alternative. Verify if the AAA package differs electrically or mechanically from the BCA package before substitution. Ensure the replacement maintains the same isolation voltage and current ratings for direct interchangeability.

FAQ

What is the maximum continuous current per channel?

The maximum continuous output current is 700 mA per channel.

Does the device provide status feedback?

Yes, it includes channel status reporting and low-voltage detection features.