SI83402BCA-IFR

Overview

The SI83402BCA-IFR is a dual-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 1.25 A per channel and a peak current limit of approximately 1.5 A. The device operates within a supply voltage range of 2.25 V to 32 V on the power side. It features a maximum on-resistance of 280 mOhms and typical propagation delays of 2.3 µs (turn-on) and 2.9 µs (turn-off). The component is housed in a 32-lead DFN package (9x9 mm) and supports industrial temperature ranges from -40°C to +125°C.

Feature Summary

• Integrates dual-channel isolated power switching with integrated digital isolation barriers
• Provides comprehensive protection including overcurrent, thermal shutdown, and undervoltage lockout
• Supports flexible control via independent input pins for each channel
• Features low on-resistance for efficient power delivery in compact form factors

Applications

• Industrial automation power distribution modules
• Automotive electronic control unit (ECU) load switching
• Telecommunications infrastructure power management
• Medical equipment power sequencing and protection

Procurement Notes

Verify the complete part number including the suffix '-IFR' to confirm reel packaging and specific tape-and-reel specifications. Ensure compatibility with the required isolation voltage ratings and thermal management solutions for the target application environment. Cross-reference official datasheets for exact pinout configurations and recommended operating conditions before integration into final designs.

Selection Notes

Select this component when dual-channel isolated switching is required with high current capacity up to 1.25 A per channel. Consider the 32-DFN package size for space-constrained designs requiring robust isolation. Evaluate thermal performance under maximum load conditions to ensure operation within the specified temperature range. Verify input logic levels match the controlling microcontroller or FPGA outputs.

Part Context

This device belongs to the Si834xx series of isolated smart switches from Skyworks Solutions. The series offers various channel counts and current ratings tailored for diverse power distribution needs. The Si83402 variant specifically provides two channels, balancing performance and cost for mid-range power switching applications requiring galvanic isolation between control and power domains.

Replacement Considerations

Check Skyworks documentation for direct replacements within the Si834xx family, such as the Si83404 for four-channel requirements. Verify pin-to-pin compatibility and electrical parameter equivalence before substituting with components from other manufacturers.