LP3992-33B5F
Lowpower Semiconductor Co., Ltd.
Needs validationhigh risk
LP3992-33B5F is a possible 3.3V LDO fallback with current and Vin limits.
Best Alternatives to HE9073A33M5R
HE9073A33M5R is a 3.3V 500mA low-Iq LDO in SOT-23-5. No pin-compatible replacement is proven from the provided data.
AI replacement insight
Electrical riskhigh
Current, Vin, and Iq differ.
Package riskmedium
Package matches, pinout unknown.
Firmware risklow
No firmware interface.
Sourcing riskmedium
Only catalog status is known.
Can it be replaced directly?
No direct pin-compatible replacement is supported by the available evidence.
Best replacement path
LP3992-33B5F may be reviewed only for derated 3.3V loads.
Main risk
Pinout is missing and electrical margins are weaker.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | HE9073A33M5R | LP3992-33B5F | Alt 2 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 | SOT-23-5 — Same package name. | ||
| Pinout | 5 pins | 5 pins | 5 pins — Pin functions absent. | ||
| Voltage | 3.3V, Vin max 7V | 3.3V, Vin 5.5V/6.5V | 3.3V, Vin 5.5V/6.5V — Input margin lower. | ||
| Current | 500mA | 300mA | 300mA — Load must derate. | ||
| Temperature | -40 to 85C | -40 to 85C | -40 to 85C — Range matches. | ||
| Application | low-Iq 3.3V LDO | 75uA LDO | 75uA LDO — Iq far higher. |
Application & sourcing insights
Questions & answers
From the provided candidates, LP3992-33B5F is the closest review candidate, but it is lower current and lower Vin.