
TECH PUBLIC
A strong parametric upgrade, but its higher minimum input voltage (2.3V) must be verified.
Finding a substitute for the onsemi NCP115ASN330T2G 3.3V LDO involves checking key parameters like input voltage range, dropout voltage, and package compatibility. Several functional alternatives exist but may require design review.
TSOP-5 and SOT-23-5 are different packages that may or may not share a pinout.
Several candidates have higher minimum input voltage or worse dropout, requiring application-specific review.
Many functional alternatives are available from various manufacturers.
Direct replacement for NCP115ASN330T2G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for NCP115ASN330T2G, then review parametric alternatives for package and electrical fit.
The main risks are package incompatibility (TSOP-5 vs. SOT-23-5/SOT353) and mismatches in minimum input voltage or dropout voltage, which can affect circuit performance under all operating conditions.

TECH PUBLIC
A strong parametric upgrade, but its higher minimum input voltage (2.3V) must be verified.
| Feature / factor | NCP115ASN330T2G | TPCAT6219-330TDGT3 | HE2210M533R | TPMIC5219-3.3YM5 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | TSOP-5 | SOT23-5 | SOT-23-5 | SOT-23-5 | SOT23-5 / SOT-23-5 — Requires layout and pinout verification.; HE2210M533R: Requires layout and pinout verification.; TPMIC5219-3.3YM5: Requires layout and pinout verification.; GR6220B331MR-G: Requires layout and pinout verification. |
| Voltage | 1.7V | 2.3V | Unknown Min, 50V Max | 2.0V | 2.3V / Unknown Min, 50V Max / 2.0V — Minimum input voltage is higher than target.; HE2210M533R: Max input voltage is much higher, but min input voltage is unknown and must be checked.; TPMIC5219-3.3YM5: Minimum input voltage is higher than target. |
| Current | 300 mA | 500 mA | 400 mA | 500 mA | 500 mA / 400 mA / 300 mA — Higher output current capability.; HE2210M533R: Higher output current capability.; TPMIC5219-3.3YM5: Higher output current capability.; GR6220B331MR-G: Output current matches target. |
| Dropout Voltage | 235 mV @ 300 mA | 85 mV @ 100mA | 350 mV @ 100 mA | 420 mV @ 100 mA | 85 mV @ 100mA / 350 mV @ 100 mA / 420 mV @ 100 mA / Unknown — Significantly better dropout performance.; HE2210M533R: Dropout is likely worse than target at 300mA.; TPMIC5219-3.3YM5: Significantly worse dropout performance.; GR6220B331MR-G: Dropout voltage is not specified. |
| Temperature | -40°C to 85°C | -40°C to 150°C | - | - | -40°C to 150°C / Unknown — Wider operating temperature range.; GR6220B331MR-G: Operating temperature range is not specified. |
| Quiescent Current | 50 µA | - | 2 µA | - | 2 µA — Significantly lower quiescent current. |
Verified drop-in options for NCP115ASN330T2G 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.