SI83414ACA-IFR

Overview

The SI83414ACA-IFR is a four-channel isolated smart switch from Skyworks Solutions. It integrates high-side and low-side power switches with digital isolation, supporting a supply voltage range of 2.25 V to 32 V. Each channel delivers an output current of 700 mA with a maximum on-resistance of 280 mOhms. The device features a current limit of 880 mA, ensuring robust load protection. Switching characteristics include a maximum turn-on time of 2.1 µs and a maximum turn-off time of 2.2 µs. It operates within a temperature range of -40°C to +125°C and utilizes a 32-DFN package.

Feature Summary

• Integrates four independent high-side and low-side power switches with integrated digital isolation for flexible load control.
• Provides comprehensive protection mechanisms including overcurrent limiting and thermal shutdown to safeguard connected loads.
• Features fast switching speeds with minimal propagation delay for precise timing in power distribution applications.

Applications

• Industrial automation systems requiring isolated power distribution
• Automotive electronic control units (ECUs) for actuator driving
• Smart grid infrastructure and metering devices

Procurement Notes

Verify the specific suffix 'IFR' indicates tape-and-reel packaging when sourcing components. Confirm that the operating voltage range aligns with your system's power rails. Ensure thermal management strategies account for the 32-DFN package footprint and junction-to-ambient resistance specifications provided in the official datasheet.

Selection Notes

Select this component for designs requiring galvanic isolation between control logic and high-voltage loads. The four-channel configuration reduces board space compared to discrete solutions. Verify compatibility with SPI or parallel control interfaces if applicable. Consider the 700 mA per-channel limit against peak load requirements to prevent triggering current protection thresholds during normal operation.

Part Context

This part belongs to the Si834xx family of isolated smart switches, designed for reliable power distribution in harsh environments. It combines power MOSFETs with capacitive digital isolators to provide bidirectional signal transmission and high common-mode transient immunity. The family supports various channel counts and package options to suit diverse industrial and automotive needs.

Replacement Considerations

Check for direct pin-compatible alternatives within the Si834xx series, such as the SI83414AAA variant, which may offer different packaging or slight parameter variations. Ensure any substitute maintains the same isolation voltage rating and channel count to preserve system safety and functionality.

FAQ

What is the isolation voltage rating of the SI83414ACA-IFR?

The device provides 1500Vrms isolation voltage between the input and output sides.

Does the SI83414ACA-IFR support both high-side and low-side switching?

Yes, each of the four channels can be configured as either a high-side or low-side switch.