Is there a pin-compatible replacement for LP2985-50DBVR?

No pin-compatible replacements were found in this analysis. The SOT-23-5 package has several common pinouts for LDOs, and the LP2985's configuration is not universal. Always verify datasheets for pin-for-pin compatibility before ordering.

What risks should I check before replacing LP2985-50DBVR?

Key risks include: 1) Pinout mismatch, requiring a new PCB layout. 2) Higher dropout voltage, which can cause regulation to fail if the input voltage is too low. 3) Weaker output voltage accuracy. 4) A narrower operating temperature range.

LP2985-50DBVR Alternatives, Datasheet & Cross Reference | Texas Instruments

Q: What is the best alternative to LP2985-50DBVR?

Finding a direct, pin-compatible alternative is challenging. Functional alternatives like the TPMIC5233-5.0YM5 exist with a matching 5V output, but require board redesign due to different pinouts and have weaker performance in dropout voltage and temperature range.

The LP2985-50DBVR is a popular 5V, 150mA low-dropout regulator from Texas Instruments in a SOT-23-5 package. Finding a pin-compatible replacement requires careful verification of pinout and key electrical parameters like dropout voltage and accuracy.

AI replacement insight

Electrical riskhigh

Higher dropout voltage and lower accuracy.

Package riskhigh

Pinout mismatch requires PCB redesign.

Firmware risklow

No firmware interaction expected.

Can it be replaced directly?

No direct, drop-in replacement was identified. All candidates with matching voltage had different pinouts or critical parametric deviations.

Best replacement path

Search for LDOs with 5V output, >=150mA current, <=280mV dropout, and explicitly verify the pinout (IN, GND, OUT, ON/OFF, BYPASS) matches the LP2985.

Main risk

Pinout incompatibility is the main risk, requiring a board redesign. Secondary risks are higher dropout voltage and reduced temperature range.

Recommended alternatives

A functional alternative in a SOT-23-5 package with 5V output, but requires board redesign due to different pinout.

View details

Alternative comparison matrix

Feature / factor	LP2985-50DBVR	TPMIC5233-5.0YM5	Compatibility / risk
Package	SOT-23-5	SOT-23-5	SOT-23-5 — Package matches, but pinout does not.
Pinout	IN,GND,OUT,ON/OFF,BYPASS	IN,GND,EN,NC,OUT	IN,GND,EN,NC,OUT — Pinout mismatch requires board redesign.
Voltage	5 V	5.0 V	5.0 V — Output voltage matches.
Current	150 mA	200 mA	200 mA — Higher output current capability.
Dropout Voltage	280 mV @ 150 mA	0.65 V @ 100 mA	0.65 V @ 100 mA — Significantly higher dropout voltage is a risk.
Temperature	-40°C to 125°C	-40°C to 85°C	-40°C to 85°C — Narrower operating temperature range.

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