STMicroelectronics

L4931CPT120-TR

L4931CPT120-TR Description

The L4931CPT120-TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 12V and a maximum output current of 250mA. This regulator is housed in a PPAK package, making it suitable for surface-mount applications. It features a maximum input voltage of 20V and a dropout voltage of 0.8V at 250mA, ensuring efficient operation even at lower input-to-output voltage differentials. The regulator is designed with over-current and over-temperature protection features, enhancing its reliability and safety in various electronic circuits.

L4931CPT120-TR Features

• Output Type: Fixed, providing a stable 12V output.
• Input Voltage Range: Up to 20V, allowing for a wide range of input power sources.
• Output Current: Capable of delivering up to 250mA, suitable for moderate power applications.
• Dropout Voltage: Low dropout of 0.8V at 250mA, ensuring high efficiency at low input-to-output voltage differences.
• Quiescent Current: Low quiescent current of 1.6mA, minimizing power consumption in standby mode.
• Power Supply Current: Maximum of 7mA, contributing to overall energy efficiency.
• Protection Features: Over-current and over-temperature protection, safeguarding the regulator and connected circuits from damage.
• Output Configuration: Positive, providing a straightforward and reliable power supply solution.
• Package: PPAK, ideal for surface-mount technology (SMT) applications.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Mounting Type: Surface mount, facilitating easy integration into compact and high-density designs.

L4931CPT120-TR Applications

The L4931CPT120-TR is well-suited for a variety of applications requiring a stable 12V supply with moderate current capabilities. Its low dropout voltage and efficient design make it ideal for battery-powered devices, automotive electronics, and industrial control systems. Specific use cases include:

• Battery-Powered Devices: Provides a stable power supply for portable devices, ensuring consistent performance even as battery voltage drops.
• Automotive Electronics: Suitable for automotive applications where input voltage can vary significantly, thanks to its wide input voltage range and low dropout voltage.
• Industrial Control Systems: Ideal for powering sensors and actuators in industrial environments, where reliability and protection features are crucial.
• Consumer Electronics: Can be used in various consumer electronics requiring a stable 12V supply, such as audio amplifiers and small appliances.

Conclusion of L4931CPT120-TR

The L4931CPT120-TR is a robust and efficient linear voltage regulator designed for applications requiring a stable 12V supply. Its low dropout voltage, over-current and over-temperature protection, and surface-mount package make it a versatile and reliable choice for a wide range of electronic systems. Despite being marked as obsolete, its performance benefits and compliance with environmental standards ensure it remains a valuable component for engineers and designers in need of a dependable 12V regulator.