What risks should I check before replacing TPS74401RGWR?

Before replacing, you must verify three main risks: 1) Electrical mismatch, especially lower output current or higher dropout voltage. 2) Pinout incompatibility, even in the same package. 3) Thermal performance differences.

TPS74401RGWR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TPS74401RGWR is a 3A ultra-low dropout (LDO) linear regulator from Texas Instruments in a VQFN-20 package. When seeking alternatives, key parameters to match are the 3A output current, low dropout voltage, and VQFN-20 pinout.

AI replacement insight

Electrical riskhigh

Candidates may have lower current ratings or higher dropout voltage, impacting performance.

Package riskhigh

While several candidates share the VQFN-20 package, pinout compatibility is not guaranteed and must be verified.

Sourcing risklow

Multiple alternatives exist within the same manufacturer's portfolio, offering sourcing flexibility.

Can it be replaced directly?

Direct replacement for TPS74401RGWR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most direct replacement is TPS74401RGWT, a packaging variant. For a functional alternative, TPS74901RGWR is a strong candidate but requires pinout verification.

Main risk

The main risk when substituting is selecting a part with insufficient output current, higher dropout voltage, or an incompatible pinout, which can cause circuit failure.

Recommended alternatives

A pin-compatible packaging variant of the target with identical electrical and physical characteristics.

View details

Alternative comparison matrix

Feature / factor	TPS74401RGWR	TPS74401RGWT	TPS74901RGWR	TPS7A8500RGRR	Compatibility / risk
Package	VQFN-20 (RGW)	VQFN-20	VQFN-20	VQFN-20	VQFN-20 — Package body is identical.; TPS74901RGWR: matched; TPS7A8500RGRR: matched
Current	3 A	3 A	3 A	4 A	3 A / 4 A — matched; TPS74901RGWR: matched; TPS7A8500RGRR: Higher output current capability.
Voltage	1.1 V to 5.5 V	1.1 V to 5.5 V	120 mV @ 3A	150 mV @ 4A	1.1 V to 5.5 V / 120 mV @ 3A / 150 mV @ 4A — Input voltage range matches.; TPS74901RGWR: Dropout voltage is slightly higher.; TPS7A8500RGRR: Dropout voltage is higher and specified at a different current.
Temperature	-40°C to 125°C	-40°C to 125°C	-	-	-40°C to 125°C — matched
Application	RGWR suffix	RGWT suffix	-	-	RGWT suffix — Suffix denotes different reel quantity. Electrically identical.
Pinout	Verified for target	-	Unknown	Unknown	Unknown — Belongs to a similar family, but pinout must be verified.; TPS7A8500RGRR: Pinout must be verified via datasheet comparison.

Application & sourcing insights

Questions & answers

Verified drop-in options for TPS74401RGWR are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.