Is there a pin-compatible replacement for TPS76933DBVR?

No replacement can be guaranteed as pin-compatible without comparing the datasheets. While parts like TPS7A2433DBVR and TPS76333DBVR use the same SOT-23-5 package, LDO pinouts can vary. Always verify the pin functions (IN, OUT, GND, EN, NC) before substitution.

What risks should I check before replacing TPS76933DBVR?

Before replacing, check these key risks: 1) Dropout Voltage: Ensure the new part's dropout is low enough for your minimum input voltage. 2) Quiescent Current (IQ): A higher IQ can reduce battery life. 3) Pinout: Confirm the pin configuration is identical. 4) Stability: Ensure compatibility with your existing output capacitors.

TPS76933DBVR Alternatives, Datasheet & Cross Reference | Texas Instruments

Finding a replacement for the Texas Instruments TPS76933DBVR, a 3.3V LDO in a SOT-23-5 package, requires careful attention to its excellent low dropout and quiescent current specifications. Many alternatives exist, but differ in these critical parameters.

AI replacement insight

Electrical riskhigh

Most alternatives have much higher dropout voltage and different quiescent current, affecting performance and battery life.

Package riskmedium

While the SOT-23-5 package is common, pinouts for LDOs are not standardized and require verification to avoid board damage.

Can it be replaced directly?

There is no confirmed drop-in, pin-compatible replacement for the TPS76933DBVR without engineering review. Several parts share the SOT-23-5 package, but key electrical parameters like dropout voltage and the exact pinout must be verified.

Best replacement path

TPS7A2433DBVR is the strongest functional alternative, offering higher current and lower quiescent current. However, its higher dropout voltage must be acceptable for the application.

Main risk

The primary risk when replacing the TPS76933DBVR is the significantly higher dropout voltage of most alternatives, which can cause regulation to fail if the input voltage is close to the output voltage.

Recommended alternatives

A functional alternative with higher current and lower IQ, but its significantly higher dropout voltage requires careful review.

View details

Alternative comparison matrix

Feature / factor	TPS76933DBVR	TPS7A2433DBVR	TPS76333DBVR	Compatibility / risk
Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5 — Package matches, but pinout requires verification.; TPS76333DBVR: Package matches, but pinout requires verification.
Output Voltage	3.3 V	3.3 V	-	3.3 V — Fixed output voltage matches.
Output Current	100 mA	200 mA	150 mA	200 mA / 150 mA — Higher output current capability.; TPS76333DBVR: Higher output current capability.
Input Voltage	2.7V to 10V	2.4V to 18V	2.7V to 10V	2.4V to 18V / 2.7V to 10V — Wider input voltage range.; TPS76333DBVR: Input voltage range matches.
Dropout Voltage	71mV @ 100mA	250mV @ 200mA	300mV @ 150mA	250mV @ 200mA / 300mV @ 150mA — Significantly higher dropout voltage.; TPS76333DBVR: Significantly higher dropout voltage.
Quiescent Current	17 µA	2.0 µA	140 µA	2.0 µA / 140 µA — Significantly lower quiescent current is an improvement.; TPS76333DBVR: Significantly higher quiescent current, may impact battery life.

Application & sourcing insights

Questions & answers

The best functional alternative is likely the TPS7A2433DBVR. It offers higher current (200mA) and lower quiescent current (2µA), but you must verify that its higher dropout voltage (250mV) is acceptable for your design.