Is there a pin-compatible replacement for TPS54302DDCT?

It is unlikely. While several alternatives exist in the same SOT-23-6 package, their pin functions may not match the TPS54302DDCT. You must compare the datasheets side-by-side to confirm pinout compatibility before attempting a replacement.

What risks should I check before replacing TPS54302DDCT?

Before replacing TPS54302DDCT, you must verify four key areas: 1) Input Voltage Range, 2) Output Current Capability, 3) Pinout Compatibility, and 4) External Component values, as the switching frequency of alternatives may differ.

TPS54302DDCT Alternatives, Datasheet & Cross Reference | Texas Instruments

Finding a substitute for the TPS54302DDCT is challenging due to its combination of a wide 4.5V-28V input range and 3A output current in a compact SOT-23-6 package. Potential alternatives typically involve a compromise on these key electrical ratings.

AI replacement insight

Electrical riskhigh

All candidates have lower voltage or current ratings.

Package riskmedium

While the package is the same, pinout must be verified to avoid board redesign.

Can it be replaced directly?

No, there are no direct, drop-in replacements for the TPS54302DDCT among the candidates reviewed. All alternatives require significant engineering validation due to parametric differences.

Best replacement path

No direct replacement was found. The best path is to select a candidate like FR9811S6 and carefully verify if its lower voltage and current ratings (21V, 2A) are acceptable for your specific application.

Main risk

The primary risk is using a substitute with an inadequate input voltage range or output current capability, which could lead to circuit failure.

Recommended alternatives

A potential downgrade alternative with a similar package but lower voltage and current ratings; requires engineering review.

View details

Alternative comparison matrix

Feature / factor	TPS54302DDCT	FR9811S6	HT8259ARTZ	Compatibility / risk
Package	SOT-23-6	SOT-23-6	SOT-23-6	SOT-23-6 — Package matches.; HT8259ARTZ: Package matches.
Voltage	4.5V to 28V	4.5V to 21V	4.5V to 24V	4.5V to 21V / 4.5V to 24V — Candidate has a lower maximum input voltage.; HT8259ARTZ: Candidate has a slightly lower maximum input voltage.
Current	3A	2A	1.2A	2A / 1.2A — Candidate has lower output current capability.; HT8259ARTZ: Candidate has significantly lower output current.
Switching Frequency	400 kHz	850 kHz	1.4 MHz	850 kHz / 1.4 MHz — Different frequency requires recalculating external components.; HT8259ARTZ: Different frequency requires recalculating external components.

Application & sourcing insights

Questions & answers

No direct 1:1 replacement was found. A potential downgrade is FR9811S6, but it has lower input voltage (21V vs 28V) and output current (2A vs 3A). This requires careful engineering review to ensure it meets your application's needs.