TPAP2112K-3.3TRG1
TECH PUBLIC
Needs validationhigh risk
Functional alternate with same 600mA current, but requires review of pinout, temperature, and input voltage.
Best Alternatives to LP3987H-33B5F
Find and compare potential replacements for the LP3987H-33B5F, a 3.3V 600mA LDO in a SOT23-5 package. This guide covers functional and parametric alternatives, highlighting key differences for engineering review.
AI replacement insight
Electrical riskhigh
Most candidates have lower current, temperature, or voltage ratings.
Package risklow
All candidates share the same SOT23-5 package.
Pinout riskhigh
Pin compatibility is unverified for all candidates and must be checked.
Can it be replaced directly?
No direct, drop-in replacement has been verified. All candidates have parametric differences or unconfirmed pinouts.
Best replacement path
TPAP2112K-3.3TRG1 offers a matching current rating but requires careful review of its pinout, temperature, and input voltage limits.
Main risk
The primary risks are unverified pinouts and parametric downgrades, especially lower output current (500mA vs 600mA) and reduced operating temperature range.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | LP3987H-33B5F | TPAP2112K-3.3TRG1 | SSP7603P33M5R | TPL740F33-5TR | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT23-5 | SOT23-5 | SOT23-5 | SOT-23-5 | SOT23-5 / SOT-23-5 — Form factor matches.; SSP7603P33M5R: Form factor matches.; TPL740F33-5TR: Form factor matches.; TPMIC5219-3.3YM5: Form factor matches. |
| Output Voltage | 3.3V | 3.3V | - | - | 3.3V — Output voltage matches. |
| Output Current | 600mA | 600mA | 500mA | 500mA | 600mA / 500mA — Output current matches.; SSP7603P33M5R: Output current is lower.; TPL740F33-5TR: Output current is lower.; TPMIC5219-3.3YM5: Output current is lower. |
| Input Voltage | 2.5V to 6.0V | 1.2V to 5.5V | - | 2.4V to 5.5V | 1.2V to 5.5V / 2.4V to 5.5V / 2V to 20V — Max input voltage is lower.; TPL740F33-5TR: Max input voltage is lower.; TPMIC5219-3.3YM5: Wider input voltage range. |
| Temperature | -40°C to 125°C | -40°C to 85°C | -40°C to 85°C | -40°C to 125°C | -40°C to 85°C / -40°C to 125°C — Operating temperature range is narrower.; SSP7603P33M5R: Operating temperature range is narrower.; TPL740F33-5TR: Operating temperature range matches.; TPMIC5219-3.3YM5: Operating temperature range is narrower. |
| Pinout | Standard LDO | Unknown | Unknown | Unknown | Unknown — Pinout must be verified from datasheet.; SSP7603P33M5R: Pinout must be verified from datasheet.; TPL740F33-5TR: Pinout must be verified from datasheet.; TPMIC5219-3.3YM5: Pinout must be verified from datasheet. |
Application & sourcing insights
Questions & answers
TPAP2112K-3.3TRG1 is a strong functional alternate with the same 600mA current, but requires checking pinout, a lower max input voltage, and a narrower temperature range.