SI8273AB-AS1R

Isolators - Gate Drivers Overview

The SI8273AB-AS1R is a single-channel automotive-grade galvanically isolated gate driver manufactured by Skyworks Solutions. It features a high common-mode transient immunity (CMTI) and an isolation voltage of 2.5 kVrms. The device operates within a temperature range of -40°C to +125°C and utilizes a SOIC-16 surface-mount package. Key electrical parameters include a maximum propagation delay of 75 ns, with rise and fall times of 16 ns and 18 ns respectively. It supports a supply power current of 10 mA and delivers an output current of 4 mA at 12 V. The input voltage range spans from 2.5 V to 5.5 V, compatible with TTL logic.

Isolators - Gate Drivers Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation
• High common-mode transient immunity ensures signal integrity in noisy power electronics applications
• Galvanic isolation barrier provides safety separation between control and power circuits

Isolators - Gate Drivers Applications

• Motor control systems requiring isolated gate driving
• Industrial inverters and converters
• Automotive power management units

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix AS1R against official Skyworks documentation to confirm the exact UVLO threshold and packaging configuration. Ensure the procurement channel sources genuine components with valid traceability. Cross-reference the datasheet revision date to guarantee compatibility with current design specifications. Confirm that the SOIC-16 footprint matches the target PCB layout requirements before finalizing orders.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel isolated driver with automotive certification is required. The 2.5 kVrms isolation rating suits applications needing moderate voltage separation. Consider the 75 ns propagation delay for switching frequency limitations. Verify that the 4 mA output current meets the gate charge requirements of the target power devices. Evaluate thermal dissipation capabilities given the 1.2 W power handling specification in the SOIC-16 package.

Isolators - Gate Drivers Part Context

This part belongs to the Si8273 family of digital isolators designed for high-speed data transmission and gate driving. It represents Skyworks' solution for replacing traditional optocouplers in modern power electronics. The series emphasizes low latency and high reliability for automotive and industrial sectors. It integrates capacitive isolation technology to provide robust performance without the degradation issues associated with LED-based isolation methods.

Isolators - Gate Drivers Replacement Considerations

Consult official Skyworks substitution guides for verified alternatives. Generic replacements may lack the specific AEC-Q100 certification or identical CMTI specifications.