SI8271DB-ASR

Isolators - Gate Drivers Overview

The SI8271DB-ASR is a single-channel, galvanically isolated gate driver from Skyworks Solutions. It utilizes silicon isolation technology to provide 2.5 kVRMS isolation voltage with high common-mode transient immunity (CMTI). The device features a maximum propagation delay of 75 ns, with rise and fall times of 16 ns and 18 ns respectively. It operates within a temperature range of -40°C to +125°C and dissipates up to 1.1 W. Packaged in an SOIC-8 surface-mount format, it accepts TTL logic inputs and delivers a 4 mA output current at 12 V.

Isolators - Gate Drivers Feature Summary

• High Common-Mode Transient Immunity for noise-resistant signal transmission
• Integrated Under-Voltage Lockout (UVLO) for reliable operation
• Deglitching capability to filter input spikes
• Automotive-grade qualification ensuring durability in harsh environments

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Motor control drives
• Solar inverters
• Switched-mode power supplies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ASR' against the manufacturer's official documentation to confirm reel packaging and automotive grade status. Ensure the part number matches the exact datasheet revision required for your design. Cross-reference the SOIC-8 package dimensions and thermal characteristics with your PCB layout constraints before finalizing procurement orders.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required in automotive or industrial applications. The single-channel configuration suits simple high-side or low-side driving needs. Consider the 12 V output drive strength and 4 mA current capability to ensure compatibility with the target power switch gate requirements.

Isolators - Gate Drivers Part Context

This part belongs to the Si8271 family of isolated gate drivers. It shares core specifications like CMTI and speed with other variants but differs in packaging, channel count, and specific electrical thresholds defined by its suffix. The family leverages Skyworks' proprietary silicon isolation technology to replace traditional optical isolators.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes include SI8271BBD-ASR and SI8271DBD-AS. Verify pinout compatibility and specific UVLO thresholds when swapping between these variants to ensure circuit functionality remains unchanged.