STMicroelectronics

L4931ABD35-TR

L4931ABD35-TR Description

The L4931ABD35-TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 3.5V and a maximum output current of 250mA. This regulator is housed in an 8SO package and is suitable for surface mount applications. Despite being marked as obsolete, it remains a reliable choice for specific applications requiring a stable and precise voltage regulation. The regulator features a maximum input voltage of 20V and a dropout voltage of 0.8V at 250mA, ensuring efficient operation even under varying load conditions. It also includes over-current and over-temperature protection features, enhancing its robustness and reliability.

L4931ABD35-TR Features

• Output Type: Fixed, providing a stable 3.5V output voltage.
• Input Voltage Range: Up to 20V, making it suitable for a wide range of input sources.
• Output Current: Capable of delivering up to 250mA, ideal for moderate power applications.
• Dropout Voltage: Low dropout voltage of 0.8V at 250mA ensures high efficiency and minimal power loss.
• Protection Features: Over-current and over-temperature protection safeguard the regulator and connected circuits.
• Power Supply Current: Maximum of 6mA, minimizing power consumption.
• Quiescent Current: Low quiescent current of 1mA, contributing to high efficiency.
• PSRR: Impressive power supply rejection ratio of 73dB to 55dB across a frequency range of 120Hz to 10kHz, ensuring clean output voltage.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for various manufacturing environments.
• Mounting Type: Surface mount, ideal for compact and high-density designs.
• Packaging: Tape & Reel (TR), facilitating automated assembly processes.

L4931ABD35-TR Applications

The L4931ABD35-TR is ideal for applications requiring a stable and precise 3.5V supply. Its low dropout voltage and high PSRR make it suitable for applications where input voltage may vary significantly, such as in battery-powered devices or systems with fluctuating power sources. The regulator's moderate output current capability makes it well-suited for powering microcontrollers, sensors, and other low-power electronics. Its surface mount package and tape & reel packaging also make it ideal for high-volume manufacturing and integration into compact designs.

Conclusion of L4931ABD35-TR

The L4931ABD35-TR from STMicroelectronics is a robust and reliable linear voltage regulator, offering a fixed 3.5V output with a maximum current of 250mA. Its low dropout voltage, high PSRR, and protection features make it a superior choice for applications requiring stable voltage regulation. Despite its obsolete status, the regulator's performance and compliance with environmental standards ensure it remains a viable option for specific use cases. Its surface mount package and tape & reel packaging further enhance its suitability for modern electronics manufacturing.