Is there a pin-compatible replacement for UCC27324DR?

No pin-compatible replacements were identified in this review. The UCC27324DR has a specific pinout not matched by other common dual drivers. Always verify datasheets before substitution.

What risks should I check before replacing UCC27324DR?

Key risks include pinout incompatibility requiring a board redesign, lower drive current which can slow down MOSFET switching and increase losses, and different switching speeds affecting circuit timing.

UCC27324DR Alternatives, Datasheet & Cross Reference | Texas Instruments

UCC27324DR is a dual 4-A low-side MOSFET driver from Texas Instruments in an SOIC-8 package. Finding a direct, pin-compatible replacement is challenging due to its specific pinout and performance.

AI replacement insight

Package riskhigh

Pinout is not compatible, requiring a new PCB layout.

Electrical riskhigh

Alternatives may have lower drive current or different timing, impacting performance.

Can it be replaced directly?

No, there are no direct, pin-for-pin replacements for the UCC27324DR identified in this analysis. All candidates require significant design review and a PCB revision.

Best replacement path

Source the original UCC27324DR. If unavailable, a PCB redesign is required for a functional alternative like HX27323-S, after verifying its lower current is acceptable.

Main risk

The primary risk is the lack of a pin-compatible alternative, forcing a costly and time-consuming board redesign.

Recommended alternatives

A functional alternative dual low-side driver, but with an incompatible pinout and lower drive current.

View details

Alternative comparison matrix

Feature / factor	UCC27324DR	HX27323-S	Compatibility / risk
Package	SOIC-8	SOIC-8	SOIC-8 — Package body is compatible.
Pinout	See datasheet	See datasheet	See datasheet — Pin functions and locations are different. Requires PCB redesign.
Current	4 A	2 A	2 A — Significantly lower peak output current.
Voltage	4.5 V to 15 V	4.5 V to 25 V	4.5 V to 25 V — Wider supply voltage range.
Temperature	-40°C to +125°C	-40 °C to 125 °C	-40 °C to 125 °C — Operating temperature range matches.

Application & sourcing insights

Questions & answers

The best alternative depends on design flexibility. For existing boards, sourcing the original part is best. For new designs, a functional alternative can be used, but requires a new PCB layout and performance validation.