Is there a pin-compatible replacement for TPS7A4901DGNR?

Yes, the TPS7A4001DGNR is pin-compatible in the same HVSSOP-8 package. However, it is a significant downgrade in output current (50mA vs 150mA) and must be used with caution only in low-power designs.

What risks should I check before replacing TPS7A4901DGNR?

Key risks include: 1) Output Current: Ensure the replacement provides at least 150mA. 2) Package/Pinout: Verify the package (HVSSOP-8) and pin functions match. 3) Electrical Specs: Check input voltage, dropout, and noise (PSRR) to ensure they meet system requirements.

TPS7A4901DGNR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TPS7A4901DGNR is a 36V, 150mA, ultralow-noise adjustable linear regulator. When seeking alternatives, focus on matching the HVSSOP-8 package, adjustable output, and at least 150mA current capability.

AI replacement insight

Electrical riskhigh

Most alternatives have different current, voltage, or dropout specs.

Package riskmedium

Many functional alternatives are in different packages, requiring layout changes.

Sourcing risklow

The target part is listed as Active and is generally available.

Can it be replaced directly?

No direct, drop-in replacement was found. The closest candidate, TPS7A4001DGNR, has a lower current rating and requires careful review of the application's load.

Best replacement path

Search for high-voltage LDOs in an HVSSOP-8 package with at least 150mA output current.

Main risk

The primary risk is selecting a part with insufficient output current or a different package, requiring a board redesign.

Recommended alternatives

Pin-compatible but with lower output current; suitable only for applications drawing less than 50mA.

View details

Alternative comparison matrix

Feature / factor	TPS7A4901DGNR	TPS7A4001DGNR	Compatibility / risk
Package	HVSSOP-8	HVSSOP-8	HVSSOP-8 — Package and pin count match, suggesting physical compatibility.
Voltage	Up to 36V	7V to 100V	7V to 100V — Candidate has a much higher maximum input voltage rating.
Current	150 mA	50 mA	50 mA — Candidate has significantly lower output current capability.
Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C — Operating temperature ranges are identical.
Function	Adjustable	Adjustable	Adjustable — Both are adjustable linear regulators.

Application & sourcing insights

Questions & answers

The TPS7A4001DGNR is a pin-compatible option but only provides 50mA of current versus the original's 150mA. A true alternative requires matching key parameters like 36V input, 150mA output, and the HVSSOP-8 package.