Texas Instruments

ATL431AQDBZR

The ATL431AQDBZR is a high-precision, low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It is designed to provide a stable and accurate output voltage to power sensitive electronic circuits.

Description:

The ATL431AQDBZR is a monolithic, low-dropout linear regulator that provides high-precision output voltage regulation. It has a very low dropout voltage, which allows it to operate efficiently even when the input voltage is close to the desired output voltage. The device is available in a small, thermally enhanced QFN package, making it suitable for space-constrained applications.

Features:

1. High-precision output voltage regulation: The ATL431AQDBZR provides an output voltage accuracy of ±1%, ensuring reliable performance in precision applications.
2. Low dropout voltage: The device has a dropout voltage as low as 250mV, which allows it to operate efficiently even with a small input voltage difference.
3. Low quiescent current: The quiescent current of the ATL431AQDBZR is typically 65µA, which helps to minimize power consumption in battery-powered applications.
4. Wide input voltage range: The regulator can accept input voltages from 2.5V to 5.5V, making it suitable for a variety of power supply scenarios.
5. Low output noise: The device has a low output noise of 50µV, which is ideal for sensitive analog circuits.
6. Enable and disable functionality: The ATL431AQDBZR features an enable/disable pin, allowing for easy control of the regulator's operation.
7. Thermal shutdown protection: The device includes thermal shutdown protection to prevent damage in the event of an overheating condition.

Applications:

The ATL431AQDBZR is suitable for a wide range of applications that require high-precision voltage regulation, including:

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 high-precision regulation and low output noise make it suitable for powering sensitive medical instruments and devices.
3. Industrial control systems: The device can be used to provide stable power to microcontrollers and other critical components in industrial control systems.
4. Test and measurement equipment: The low output noise and high accuracy make it ideal for use in precision test and measurement equipment.
5. Automotive electronics: The ATL431AQDBZR can be used to provide stable power to various electronic components in automotive applications, such as infotainment systems and engine control modules.

In summary, the ATL431AQDBZR is a high-precision, low-dropout linear voltage regulator that offers excellent performance in terms of output voltage accuracy, low quiescent current, and low output noise. Its wide input voltage range and thermal shutdown protection make it suitable for a variety of applications, including portable electronics, medical equipment, industrial control systems, test and measurement equipment, and automotive electronics.