Is there a pin-compatible replacement for TMI3342?

No pin-compatible replacement has been verified. While several alternatives exist in the same SOT23-6 package, their pinouts must be compared against the TMI3342 datasheet and they are not electrically equivalent.

What risks should I check before replacing TMI3342?

The main risk is the lower maximum input voltage (18V vs. 30V), which can cause device failure if your system voltage exceeds 18V. You must also check for pinout differences and adjust external components for the new switching frequency.

TMI3342 Alternatives, Datasheet & Cross Reference | MI

The TMI3342 is a 30V, 2A synchronous step-down converter in a SOT23-6 package. While no direct replacements have been found, several functional alternatives exist for applications where the input voltage does not exceed 18V.

AI replacement insight

Electrical riskhigh

Candidate max input voltage (18V) is much lower than target (30V). Different switching frequencies require redesign.

Package riskmedium

While the SOT23-6 package matches, pinout must be manually verified before assuming compatibility.

Sourcing risklow

Multiple vendors offer parts with similar function but lower voltage ratings.

Can it be replaced directly?

No direct, drop-in replacement for the TMI3342 has been identified. All found alternatives have a lower maximum input voltage, which is a critical parameter.

Best replacement path

parametric_relaxed

Main risk

The primary risk is electrical overstress. All potential substitutes have a maximum input voltage of 18V, far below the TMI3342's 30V rating.

Recommended alternatives

A SOT23-6 alternative with matching current, but a critically lower max input voltage and different switching frequency.

View details

Alternative comparison matrix

Feature / factor	TMI3342	BL8032GCB6TR	TP8204HS6	TMI3244T	Compatibility / risk
Package	SOT23-6	SOT23-6	SOT23-6	SOT23-6	SOT23-6 — Package matches.; TP8204HS6: Package matches.; TMI3244T: Package matches.
Voltage	4.5V-30V	4.5V-18V	3.5V-18V	4.5V-18V	4.5V-18V / 3.5V-18V — Max input voltage is much lower.; TP8204HS6: Max input voltage is much lower.; TMI3244T: Max input voltage is much lower.
Current	2.0A	2.0A	2.0A	4.0A	2.0A / 4.0A — Output current matches.; TP8204HS6: Output current matches.; TMI3244T: Higher output current is an upgrade.
Switching Frequency	370 kHz	500 kHz	600 kHz	-	500 kHz / 600 kHz — Higher frequency affects external components.; TP8204HS6: Higher frequency affects external components and efficiency.
Pinout	Unknown	Unknown	Unknown	Unknown	Unknown — Pinout not verified, requires datasheet comparison.; TP8204HS6: Pinout not verified, requires datasheet comparison.; TMI3244T: Pinout not verified, requires datasheet comparison.
Vref	0.8V	-	-	0.765V	0.765V — Different reference voltage requires feedback resistor changes.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. The best alternatives, such as TP8204HS6 or BL8032GCB6TR, are only suitable for applications with input voltage under 18V and require design changes.