STMicroelectronics

L4940V10

L4940V10 Description

The L4940V10 is a fixed output linear voltage regulator designed by STMicroelectronics, featuring a robust set of specifications tailored for demanding applications. This regulator is designed to provide a stable 10V output voltage with a maximum output current of 1.5A. It operates efficiently within an voltage input range up to 17V, ensuring reliable performance across various power supply conditions. The regulator is housed in a through-hole TO220AB package, making it suitable for a wide range of industrial and consumer applications.

L4940V10 Features

• Output Type: Fixed at 10V, ensuring consistent power delivery.
• Input Voltage Range: Up to 17V, providing flexibility in power supply design.
• Output Current: Capable of delivering up to 1.5A, suitable for high-current applications.
• Low Dropout Voltage: Maximum dropout voltage of 0.9V at 1.5A, enhancing efficiency and performance in low-voltage scenarios.
• Protection Features: Over-temperature, reverse polarity, and short-circuit protection, safeguarding the device and connected circuits.
• Low Quiescent Current: 8 mA, minimizing power consumption during standby.
• High PSRR: 62dB at 120Hz, ensuring excellent noise rejection and stable output.
• Mounting Type: Through-hole, facilitating easy integration into PCB designs.
• Package: TO220AB in a tube, offering robust mechanical stability and thermal performance.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.

L4940V10 Applications

The L4940V10 is ideal for applications requiring a stable and reliable power supply with a fixed output voltage. Its high output current capability and low dropout voltage make it suitable for:

• Consumer Electronics: Powering devices that require a stable 10V supply, such as audio amplifiers, LED drivers, and small appliances.
• Industrial Systems: Providing regulated power for sensors, actuators, and control systems in industrial environments.
• Telecommunications: Supplying power to communication modules and base stations.
• Automotive: Used in automotive electronics where a stable voltage supply is crucial for reliable operation.

Conclusion of L4940V10

The L4940V10 from STMicroelectronics is a versatile and reliable linear voltage regulator with a fixed 10V output. Its high output current capability, low dropout voltage, and comprehensive protection features make it an excellent choice for a variety of applications. Despite being marked as obsolete, the L4940V10 remains a robust solution for applications requiring a stable and efficient power supply. Its compliance with environmental and regulatory standards ensures that it meets the requirements of modern electronics design.