
LM2596R-5.0 matches the main 5V 3A TO-263-5 buck ratings but needs pinout review.
LM2596S-5.0RG alternatives should be screened as 5V 3A TO-263-5 buck regulators. Pinout and external power-stage parts remain the main review items.
Ratings match best candidate, but externals need review.
Top candidates share TO-263-5.
Analog regulator; no firmware interface.
Cross-vendor parts need datasheet confirmation.
No verified pin-compatible replacement is proven from the provided fields.
Start with LM2596R-5.0, then verify pinout, tab, and externals.
Pinout and external L/C network are not verified.

LM2596R-5.0 matches the main 5V 3A TO-263-5 buck ratings but needs pinout review.
| Feature / factor | LM2596S-5.0RG | LM2596R-5.0 | LM2576HVR-5.0 | LM2575GR-5.0 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | TO-263-5 | TO-263-5 | TO-263-5 | TO-263-5 | TO-263-5 — same case; LM2576HVR-5.0: same case; LM2575GR-5.0: same case |
| Pinout | 5 pins | 5 pins | 5 pins in ES | 5 pins in ES | 5 pins / 5 pins in ES — map missing; LM2576HVR-5.0: snapshot has 0 pins; LM2575GR-5.0: map missing |
| Voltage | 5V, 40V max | 5V, 40V max | 5V, 60V max | 5V, 40V max | 5V, 40V max / 5V, 60V max — main ratings align; LM2576HVR-5.0: higher max Vin; LM2575GR-5.0: main voltage ok |
| Current | 3A | 3A | 3A | 1A | 3A / 1A — same rating; LM2576HVR-5.0: same rating; LM2575GR-5.0: major derating |
| Temperature | -40 to 125C | -40 to 125C | - | - | -40 to 125C — ES match |
| Application | 150kHz buck | - | 52kHz buck | 52kHz buck | 52kHz buck — recalculate L/C; LM2575GR-5.0: recalculate L/C |
LM2596R-5.0 is the closest catalog match by 5V, 3A, 40V, 150kHz, and TO-263-5 fields, but needs pinout review.