Is there a pin-compatible replacement for LP5912-3.3DRVR?

Currently, no pin-for-pin compatible replacement with a fixed 3.3V output has been confirmed. Alternatives are typically adjustable-output LDOs in the same package, which require layout changes for feedback resistors.

What risks should I check before replacing LP5912-3.3DRVR?

Key risks include: 1) Output type (fixed vs. adjustable), requiring external components. 2) Input voltage range differences. 3) Changes in performance like quiescent current (IQ) and PSRR. Always verify the candidate's datasheet against your circuit's requirements.

LP5912-3.3DRVR Alternatives, Datasheet & Cross Reference | Texas Instruments

LP5912-3.3DRVR is a 500mA, low-noise, fixed 3.3V LDO in a WSON-6 package. While no direct pin-compatible replacements have been identified, several functional alternatives from Texas Instruments exist that can be adapted with circuit modifications.

AI replacement insight

Electrical riskmedium

Requires new components and re-evaluation of Vin, IQ, and PSRR.

Package risklow

Candidates are available in the same WSON-6 package, but pin functions will differ.

Sourcing risklow

Alternatives are active parts from the same manufacturer.

Can it be replaced directly?

No, there is no direct, drop-in replacement for LP5912-3.3DRVR. All viable alternatives require circuit modifications.

Best replacement path

Adapt an adjustable LDO like TLV75801PDRVR, which requires adding feedback resistors and verifying the slightly different input voltage range.

Main risk

The primary risk is the need for circuit redesign to accommodate an adjustable-output regulator instead of a fixed-output one.

Recommended alternatives

Functional alternative with matching current but requires external resistors to set the output voltage.

View details

Alternative comparison matrix

Feature / factor	LP5912-3.3DRVR	TLV75801PDRVR	TLV76701DRVR	TPS7A2601DRVR	Compatibility / risk
Package	WSON-6	WSON-6	WSON-6	WSON-6	WSON-6 — Package matches, pinout requires verification.; TLV76701DRVR: Package matches, pinout requires verification.; TPS7A2601DRVR: Package matches, pinout requires verification.
Output Type	Fixed 3.3V	Adjustable	Adjustable	Adjustable	Adjustable — Requires external resistors to set 3.3V output.; TLV76701DRVR: Requires external resistors to set 3.3V output.; TPS7A2601DRVR: Requires external resistors to set 3.3V output.
Current	500 mA	500 mA	1 A	500 mA	500 mA / 1 A — Output current capability matches.; TLV76701DRVR: Higher output current provides more margin.; TPS7A2601DRVR: Output current capability matches.
Voltage	1.6V to 6.5V	1.5V to 6.0V	2.5V to 16V	2.4V to 18V	1.5V to 6.0V / 2.5V to 16V / 2.4V to 18V — Similar range, but max input is slightly lower.; TLV76701DRVR: Minimum input voltage is significantly higher.; TPS7A2601DRVR: Minimum input voltage is higher.
Quiescent Current	30 µA	25 µA	-	2.0 µA	25 µA / 2.0 µA — Lower quiescent current is an improvement.; TPS7A2601DRVR: Significantly lower quiescent current is a major improvement.
Psrr	75 dB	-	70 dB	-	70 dB — PSRR is slightly lower than target.

Application & sourcing insights

Questions & answers

No direct drop-in replacement is available. Functional alternatives like TLV75801PDRVR offer similar performance but are adjustable, requiring external resistors and careful review of the input voltage range for your application.