Is there a pin-compatible replacement for RT8279GSP?

No pin-compatible replacement is confirmed from the supplied evidence because pinout data is missing.

What risks should I check before replacing RT8279GSP?

Check pinout, max VIN, load current, thermal margin, switching topology, and compensation/BOM changes.

RT8279GSP is a 5A 36V buck regulator. Current catalog candidates require pinout, load, and BOM review before use.

Several options are below 5A or 36V.

SOP-8 EP matches, pinout is unverified.

No digital interface is listed.

Lifecycle fields are mixed or blank.

No confirmed pin-compatible replacement is proven from the supplied evidence.

Review RT6363GSP first if the design can derate to 3.5A; otherwise seek a true 5A 36V option.

Most candidates reduce output current or change topology/peripheral needs.

RT6363GSP may work for derated RT8279GSP designs after FAE review.

Feature / factor	RT8279GSP	RT6363GSP	RT7272BGSP	RT7272AGSP	Compatibility / risk
Package	SOP-8 EP, 8	SOP-8 EP, 8	SOP-8 EP, 8	SOP-8 EP, 8	SOP-8 EP, 8 — mechanical match only; RT7272BGSP: pinout not proven; RT7272AGSP: mechanical only; RT6283BGSP: not pin proof
Pinout	unknown	unknown	unknown	unknown	unknown — not verified; RT7272BGSP: needs datasheet check; RT7272AGSP: no pin evidence; RT6283BGSP: must verify
Voltage	5.5-36V in	4-60V in	4.5-36V in	4.5-36V in	4-60V in / 4.5-36V in / 4.5-30V in — input range covers; RT7272BGSP: no extra margin; RT7272AGSP: same max; RT6283BGSP: not for 36V rail
Current	5A	3.5A	3A	3A	3.5A / 3A — load derating; RT7272BGSP: not for 5A load; RT7272AGSP: derated use; RT6283BGSP: derated
Application	async buck 500k	async buck adj	sync buck	-	async buck adj — freq includes 500k; RT7272BGSP: BOM may differ
Temperature	-40 to 85C	-	-	-40 to 125C	-40 to 125C — listed wider; RT6283BGSP: listed wider

RT6363GSP is the closest listed candidate, but only for derated loads up to 3.5A after FAE review.