Texas Instruments

TPS78429QDBVRQ1  

Linear & Switching Voltage Regulators

TPS78429QDBVRQ1 Description

The TPS78429QDBVRQ1 is a high-performance linear regulator designed for automotive applications, offering a fixed output voltage of 2.9V with a maximum output current of 300mA. Manufactured by Texas Instruments, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. The regulator is designed to operate with an input voltage range up to 6V, ensuring compatibility with a variety of power sources.

TPS78429QDBVRQ1 Features

• Fixed Output Voltage: The TPS78429QDBVRQ1 provides a stable output voltage of 2.9V, ensuring consistent power delivery to sensitive automotive electronics.
• High Efficiency: With a low dropout voltage of 0.115V at 300mA, the regulator maintains high efficiency even under varying load conditions, reducing power loss and improving overall system performance.
• Low Quiescent Current: The device features a low quiescent current of 30µA, minimizing power consumption during standby or low-load conditions, which is crucial for battery-powered systems.
• Enable Control: The regulator includes an enable control feature, allowing for precise control over the power supply, which can be used to manage power sequencing or to conserve power when the regulator is not in use.
• Protection Features: The TPS78429QDBVRQ1 offers over-current and over-temperature protection, safeguarding the device and connected components from potential damage due to excessive current or temperature.
• Noise Performance: The regulator boasts a high Power Supply Rejection Ratio (PSRR) ranging from 60dB at 1kHz to 30dB at 1MHz, effectively filtering out noise from the input power supply and ensuring clean output voltage for sensitive applications.
• Automotive Grade: Certified for automotive use, the TPS78429QDBVRQ1 meets stringent reliability and performance standards required for automotive applications, including a Moisture Sensitivity Level (MSL) of 2 (1 Year).

TPS78429QDBVRQ1 Applications

The TPS78429QDBVRQ1 is ideally suited for a range of automotive applications where a stable and efficient power supply is critical. Some specific use cases include:

• In-Car Electronics: Providing power to infotainment systems, GPS units, and other electronic devices within the vehicle.
• Sensors and Actuators: Supplying power to various sensors and actuators in the vehicle, ensuring reliable operation under varying conditions.
• Battery Management Systems: Used in battery management systems to provide stable power to control and monitoring circuits.
• Telematics and Communication Modules: Powering communication modules for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication systems.

Conclusion of TPS78429QDBVRQ1

The TPS78429QDBVRQ1 from Texas Instruments is a robust and efficient linear regulator designed to meet the demanding requirements of automotive applications. Its combination of a fixed 2.9V output, low dropout voltage, low quiescent current, and high PSRR makes it an ideal choice for powering sensitive automotive electronics. The inclusion of enable control and comprehensive protection features further enhances its reliability and versatility. With its compact SOT23-5 package and automotive-grade certification, the TPS78429QDBVRQ1 is well-suited for a variety of applications where space is limited and performance is paramount.

TPS78429QDBVRQ1 Documents

Download datasheets and manufacturer documentation for TPS78429QDBVRQ1

PCN :

Product Change Notification (PDF)