SI83404ACA-IF

Overview

The Si83404ACA-IF is a four-channel isolated smart switch IC from Skyworks Solutions, designed for power distribution applications. It integrates high-side and low-side switches within a single DFN-32 package. The device supports an operating supply voltage range of 2.25 V to 32 V. Key electrical parameters include a maximum output current of 700 mA per channel and a current limit of 880 mA. The maximum on-resistance is specified at 280 mOhms. Switching performance features a maximum turn-on time of 2.3 us and a maximum turn-off time of 2.9 us. The component operates reliably across a temperature range of -40 C to +125 C.

Feature Summary

• Integrates four independent isolated smart switches with high-side and low-side configurations in a compact surface-mount package.
• Provides robust overcurrent protection through integrated current limiting capabilities to safeguard connected loads.

Applications

• Industrial power distribution systems requiring isolated switching
• Automotive electronic control units needing reliable load management
• Consumer electronics platforms utilizing distributed power architectures

Procurement Notes

Verify the specific suffix 'ACA' against official Skyworks documentation to confirm pinout compatibility and thermal characteristics relative to other variants in the Si834xx series. Ensure that the DFN-32 package requirements align with PCB layout guidelines. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly to maintain component integrity during manufacturing processes.

Selection Notes

Select this component when designing systems requiring multiple isolated outputs with precise current limiting. The wide input voltage range accommodates various bus voltages. Consider the thermal dissipation capabilities of the DFN-32 package for high-density designs. Evaluate the switching speed parameters against system timing requirements to ensure adequate response times for load protection events.

Part Context

The Si83404ACA-IF belongs to the Si834xx family of isolated smart switches. This series is engineered to simplify power distribution by combining multiple switches into a single solution. The family offers flexibility in configuration options, allowing designers to tailor isolation and protection features to specific application needs while maintaining a standardized interface and footprint.

Replacement Considerations

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