Texas Instruments

REF3040AIDBZR

The REF3040AIDBZR is a precision low-dropout (LDO) linear voltage regulator from Texas Instruments. It is designed to provide a stable and accurate output voltage over a wide range of input voltages and load currents.

Description:

The REF3040AIDBZR is a fixed-output voltage regulator with an output voltage of 4.096V. It has a very low dropout voltage of 250mV, which means it can regulate the output voltage accurately even when the input voltage is close to the output voltage. The device is available in a small, thermally enhanced SOT-23 package, making it suitable for space-constrained applications.

Features:

Some of the key features of the REF3040AIDBZR include:

1. Low dropout voltage: The low dropout voltage of 250mV ensures accurate regulation even when the input voltage is close to the output voltage.
2. Precision output voltage: The output voltage is factory trimmed to ±1%, ensuring high accuracy and stability.
3. Low quiescent current: The device has a low quiescent current of 70µA, which helps to minimize power consumption in battery-powered applications.
4. High PSRR: The high power supply rejection ratio (PSRR) of 80dB at 1kHz ensures that the output voltage remains stable even when the input voltage has noise or ripple.
5. Short-circuit protection: The REF3040AIDBZR has built-in short-circuit protection to prevent damage in case of a short circuit at the output.
6. Small package: The device is available in a small SOT-23 package, making it suitable for space-constrained applications.

Applications:

The REF3040AIDBZR is suitable for a wide range of applications that require a stable and accurate voltage regulation. Some of the common applications include:

1. Portable electronics: The low quiescent current and low dropout voltage make it ideal for battery-powered devices such as smartphones, tablets, and wearables.
2. Medical equipment: The precision output voltage and high PSRR make it suitable for medical equipment that requires stable and accurate voltage regulation.
3. Industrial control systems: The REF3040AIDBZR can be used in industrial control systems that require a stable voltage supply for reliable operation.
4. Automotive applications: The device can be used in automotive applications such as infotainment systems, where a stable and accurate voltage supply is required.

In summary, the REF3040AIDBZR is a precision LDO voltage regulator from Texas Instruments that offers a stable and accurate output voltage with a low dropout voltage and low quiescent current. It is suitable for a wide range of applications, including portable electronics, medical equipment, industrial control systems, and automotive applications.