STMicroelectronics

L7818CT  

Linear & Switching Voltage Regulators

L7818CT Description

The L7818CT is a fixed output voltage linear regulator designed by STMicroelectronics. It is part of the L78 series, renowned for its reliability and performance in power management applications. This regulator offers a fixed output voltage of 18V and can handle a maximum input voltage of 35V. It is capable of delivering a continuous output current of 1.5A, making it suitable for applications requiring stable power supply with moderate current demands.

The L7818CT features a dropout voltage of 2V at 1A, ensuring efficient operation even under high current loads. It operates within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and consumer applications. The regulator also includes over-temperature and short-circuit protection, enhancing its robustness and reliability.

L7818CT Features

• Fixed Output Voltage: 18V, providing a stable power supply for various electronic circuits.
• High Input Voltage Range: Up to 35V, allowing for flexibility in input power sources.
• High Output Current: 1.5A, suitable for applications requiring moderate to high current.
• Low Dropout Voltage: 2V at 1A, ensuring efficient power conversion and minimal power loss.
• Protection Features: Over-temperature and short-circuit protection, enhancing reliability and safety.
• Operating Temperature Range: 0°C to 125°C, suitable for a wide range of environmental conditions.
• Low Quiescent Current: 8 mA, minimizing power consumption during standby.
• High Power Supply Rejection Ratio (PSRR): 53dB at 120Hz, ensuring clean output voltage.
• Through Hole Mounting: Ideal for applications requiring robust mechanical stability.
• Compliance: REACH unaffected and ROHS3 compliant, meeting environmental and safety standards.

L7818CT Applications

The L7818CT is ideal for a variety of applications where a stable and reliable power supply is required. Its fixed output voltage and high current capability make it suitable for:

• Consumer Electronics: Powering devices such as radios, amplifiers, and other audio equipment.
• Industrial Equipment: Providing stable power to control systems, sensors, and actuators.
• Telecommunications: Supplying power to base stations, repeaters, and other communication equipment.
• Automotive Electronics: Used in vehicle infotainment systems and other electronic modules.
• Medical Devices: Powering diagnostic equipment and other medical instruments.

Conclusion of L7818CT

The L7818CT is a versatile and reliable linear regulator that offers a fixed 18V output with a maximum input voltage of 35V and a continuous output current of 1.5A. Its low dropout voltage, comprehensive protection features, and wide operating temperature range make it an excellent choice for a variety of applications. Despite being marked as obsolete, the L7818CT remains a robust solution for power management needs, especially in environments where stability and reliability are paramount.

L7818CT Documents

Download datasheets and manufacturer documentation for L7818CT

Datasheets :

L78      

HTML Datasheet :

L78