TPAP2112K-3.3TRG1
TECH PUBLIC
Needs validationmedium risk
Strong functional alternative with better input voltage range and output current, but higher quiescent current.
Best Alternatives to ETA5055V330DS2F
The ETA5055V330DS2F is an ultra-high performance 500mA LDO, notable for its 102dB PSRR and 4.5µA quiescent current, making it ideal for noise-sensitive applications. Finding a direct replacement requires careful matching of these key metrics.
AI replacement insight
Electrical riskhigh
Most alternatives have lower PSRR, higher Iq, or different input voltage ranges.
Package riskmedium
While the package matches, pinout must be verified for each candidate to ensure drop-in compatibility.
Can it be replaced directly?
No direct, verified pin-to-pin replacement is available from the reviewed candidates. All options require engineering review for pinout, input voltage, and significant differences in PSRR and quiescent current.
Best replacement path
Identify alternatives with a compatible input voltage range, then evaluate trade-offs in quiescent current (Iq) and Power Supply Rejection Ratio (PSRR), as most will not match the target's ultra-high PSRR.
Main risk
The primary risk is performance degradation in noise-sensitive circuits due to significantly lower PSRR in all available alternatives.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | ETA5055V330DS2F | TPAP2112K-3.3TRG1 | TPMIC5219-3.3YM5 | TPCAT6219-330TDGT3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT23-5 | SOT23-5 | SOT-23-5 | SOT23-5 | SOT23-5 / SOT-23-5 — Package matches.; TPMIC5219-3.3YM5: Package matches.; TPCAT6219-330TDGT3: Package matches.; SSP7603P33M5R: Package matches. |
| Current | 4.5µA | 10µA | 1.5µA | 10µA | 10µA / 1.5µA — Quiescent current is more than double.; TPMIC5219-3.3YM5: Lower quiescent current is an improvement.; TPCAT6219-330TDGT3: Quiescent current is more than double.; SSP7603P33M5R: Lower quiescent current is a significant improvement. |
| Voltage | 1.8V to 5.5V | 1.2V to 5.5V | 2V to 20V | 2.3V to 5.5V | 1.2V to 5.5V / 2V to 20V / 2.3V to 5.5V / Unknown to 15V — Wider input voltage range is an improvement.; TPMIC5219-3.3YM5: Higher minimum input voltage (2.0V vs 1.8V).; TPCAT6219-330TDGT3: Higher minimum input voltage (2.3V vs 1.8V).; SSP7603P33M5R: Minimum input voltage is not specified. |
| Psrr | 102dB | Unknown | Unknown | Unknown | Unknown / 40dB — PSRR is not specified and likely much lower.; TPMIC5219-3.3YM5: PSRR is likely much lower than target's 102dB.; TPCAT6219-330TDGT3: PSRR is not specified and likely much lower.; SSP7603P33M5R: PSRR is extremely low compared to the target. |
Application & sourcing insights
Questions & answers
While no perfect match exists, TPAP2112K-3.3TRG1 offers a compatible voltage range and higher output current but has higher quiescent current and unverified PSRR. All alternatives require careful review for your specific application.