Is there a pin-compatible replacement for TPS54302DDCR?

Yes, LMR50410XDBVR is pin-compatible. However, it is a major downgrade, supporting only 1A of output current compared to the original's 3A. It is only suitable for low-power applications.

What risks should I check before replacing TPS54302DDCR?

First, verify your circuit's maximum load current; most alternatives have lower current ratings. Second, check the switching frequency, as a mismatch will require recalculating external inductor and capacitor values. Finally, always confirm the pinout from the datasheet.

TPS54302DDCR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TPS54302DDCR is a popular 4.5V-28V, 3A synchronous buck converter in a SOT-23-6 package. Finding a substitute requires careful matching of its high output current and pinout.

AI replacement insight

Electrical riskhigh

Most alternatives have much lower output current ratings.

Package risklow

SOT-23-6 is a common package, but pinouts vary.

Can it be replaced directly?

No direct, drop-in replacement was found that matches the 3A output current. LMR50410XDBVR is pin-compatible but is a significant current downgrade.

Best replacement path

For loads under 1A, LMR50410XDBVR is a pin-compatible option. For higher loads, a PCB redesign is likely needed to accommodate a different part.

Main risk

The primary risk is finding a part that matches the 3A output current in the same SOT-23-6 package and pinout.

Recommended alternatives

A pin-compatible alternative with a lower 1A output current, suitable for applications drawing less than 1A.

View details

Alternative comparison matrix

Feature / factor	TPS54302DDCR	LMR50410XDBVR	Compatibility / risk
Package	SOT-23-6	SOT-23-6	SOT-23-6 — Package is a form-fit match.
Pinout	Identical	Identical	Identical — Pinout is identical based on datasheet review.
Current	3A	1A	1A — Significant downgrade in output current.
Voltage	4.5V to 28V	4V to 36V	4V to 36V — Candidate has a wider and fully compatible input voltage range.
Frequency	400kHz	700kHz	700kHz — Different switching frequency requires external component review.

Application & sourcing insights

Questions & answers

For loads under 1A, the LMR50410XDBVR is a pin-compatible option from Texas Instruments. For loads over 1A, a replacement with a different pinout or package will likely be required, necessitating a PCB redesign.