
RICHTEK
RT7272AGSP is the closest same-series 3A 36V synchronous buck candidate.
RT7272BGSP is a 3A 36V synchronous buck regulator. The closest listed candidate is RT7272AGSP, but pinout review is still required.
Voltage, topology, and compensation must match.
SOP-8 EP matches for kept items, pinout does not.
No digital interface is shown.
Lifecycle fields are sparse.
Direct replacement for RT7272BGSP should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Review RT7272AGSP first, then lower-voltage options only if design margins allow.
Pinout and regulator loop details are not verified.

RICHTEK
RT7272AGSP is the closest same-series 3A 36V synchronous buck candidate.
| Feature / factor | RT7272BGSP | RT7272AGSP | RT6283BGSP | RT6363GSP | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOP-8 EP | SOP-8 EP | SOP-8 EP | SOP-8 EP | SOP-8 EP — same catalog package; RT6283BGSP: same package; RT6363GSP: same package; RT7240GSP: snapshot matches |
| Pinout | 8 pins | 8 pins | 8 pins | 8 pins | 8 pins — pin functions missing; RT6283BGSP: pin functions missing; RT6363GSP: pin functions missing |
| Voltage | 4.5-36V in | 4.5-36V in | 4.5-30V in | 4-60V in | 4.5-36V in / 4.5-30V in / 4-60V in / 4.5-18V in — range matches; RT6283BGSP: below target; RT6363GSP: higher input rating; RT7240GSP: half rating |
| Current | 3A | 3A | 3A | 3.5A | 3A / 3.5A — same output current; RT6283BGSP: same current; RT6363GSP: higher current; RT7240GSP: higher output current |
| Temperature | -40 to 125C | -40 to 125C | -40 to 125C | - | -40 to 125C / -40 to 85C — range matches; RT6283BGSP: range matches; RT7240GSP: lower TA shown |
| Application | sync current-mode | - | - | async buck | async buck / ACOT — external diode likely; RT7240GSP: loop behavior differs |
Verified drop-in options for RT7272BGSP are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.