Needs validationmedium risk
A likely pin-compatible alternative with matching package and key electrical specs; requires datasheet review.
Best Alternatives to 1117-5
The IDCHIP 1117-5 is a popular 5V, 1A low-dropout (LDO) regulator in a SOT-223 package. Finding a suitable replacement involves matching key electrical parameters and verifying the physical footprint and pinout.
AI replacement insight
Package riskmedium
Package names like SOT-223 and SOT-223-3L can have identical footprints but must be verified.
Electrical risklow
Top candidates have matching or superior key electrical specs like voltage, current, and dropout.
Can it be replaced directly?
Direct replacement for 1117-5 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
For a direct match, investigate LM1117GS-5.0. For an electrical upgrade, consider LDL1117S50R. Both require physical verification.
Main risk
The primary risk is physical incompatibility due to slight package variations or different pin assignments, even among parts with similar names.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | 1117-5 | LM1117GS-5.0 | LDL1117S50R | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-223-3L | SOT-223-3L | SOT223 | SOT-223-3L / SOT223 — Package name matches, but footprint and pinout require verification.; LDL1117S50R: Package names are similar but may have different footprints. Verification is required. | |
| Voltage | 5.0V | 5.0V | 5.0V | 5.0V — Output voltage is identical.; LDL1117S50R: Output voltage is identical. | |
| Current | 1.0A | 1.0A | 1.2A | 1.0A / 1.2A — Output current capability is identical.; LDL1117S50R: Higher output current capability. | |
| Dropout Voltage | 1.2V @ 1A | 1.2V | 350mV @ 1.2A | 1.2V / 350mV @ 1.2A — Dropout voltage at full load is identical.; LDL1117S50R: Significantly lower dropout voltage provides better efficiency. | |
| Temperature | -40°C to 125°C | Unknown | -40°C to 125°C | Unknown / -40°C to 125°C — Operating temperature range not found in provided data; must be verified from datasheet.; LDL1117S50R: Operating temperature range matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for 1117-5 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.