STMicroelectronics

L4931ABDT80-TR

L4931ABDT80-TR Description

The L4931ABDT80-TR is a linear voltage regulator designed by STMicroelectronics, a leading manufacturer in the electronics industry. This device is part of the Power Management Integrated Circuit (PMIC) category and is specifically tailored for applications requiring a fixed output voltage of 8V and a maximum output current of 250mA. The regulator is housed in a DPAK package, which is suitable for surface-mount applications, ensuring robustness and reliability in various electronic systems.

The L4931ABDT80-TR is designed to operate with an input voltage range up to 20V, making it versatile for a wide array of power supply configurations. Its low dropout voltage of 0.8V at 250mA ensures efficient power conversion, even when the input voltage is close to the output voltage. This feature is particularly beneficial in applications where minimizing power loss is critical.

L4931ABDT80-TR Features

• Fixed Output Voltage: The regulator provides a stable 8V output, ensuring consistent performance in applications requiring a precise voltage level.
• High Efficiency: With a maximum dropout voltage of 0.8V at 250mA, the L4931ABDT80-TR minimizes power dissipation and improves overall efficiency.
• Low Quiescent Current: The device features a quiescent current of only 1.6mA, which is crucial for applications where power consumption needs to be minimized, especially in battery-operated devices.
• Protection Features: The regulator includes over-current and over-temperature protection, safeguarding the device and connected circuits from potential damage.
• High Power Supply Rejection Ratio (PSRR): The PSRR ranges from 67dB at 120Hz to 55dB at 10kHz, ensuring excellent noise rejection and stable output voltage under varying input conditions.
• Compliance and Packaging: The L4931ABDT80-TR is RoHS compliant and REACH unaffected, making it suitable for environmentally conscious applications. It is available in a Tape & Reel (TR) package, facilitating easy handling and integration into automated assembly processes.

L4931ABDT80-TR Applications

The L4931ABDT80-TR is ideal for a variety of applications where a stable and efficient power supply is essential. Some specific use cases include:

• Consumer Electronics: Ideal for powering small electronic devices such as portable audio equipment, where a fixed 8V supply is required.
• Industrial Equipment: Suitable for powering sensors and actuators in industrial control systems, ensuring reliable operation even in harsh environments.
• Telecommunications: Can be used in low-power communication modules, providing a stable voltage supply for consistent performance.
• Automotive: Applicable in automotive electronic systems where a fixed voltage supply is needed for various components, ensuring reliable operation under varying conditions.

Conclusion of L4931ABDT80-TR

The L4931ABDT80-TR from STMicroelectronics is a robust and efficient linear voltage regulator designed for applications requiring a fixed 8V output and up to 250mA of current. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for applications where power efficiency and stability are paramount. The inclusion of over-current and over-temperature protection ensures reliable operation and longevity. Despite being marked as obsolete, the L4931ABDT80-TR remains a viable option for designers looking for a reliable and efficient power management solution.