onsemi

LM7805CT

LM7805CT Description

The LM7805CT is a fixed positive linear voltage regulator designed to provide a stable 5V output voltage with a maximum input voltage of 35V. Manufactured by onsemi, this device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a Through Hole TO220-3 package. Despite being marked as obsolete, the LM7805CT remains a reliable choice for applications requiring a robust and straightforward voltage regulation solution. It features a maximum dropout voltage of 2V at 1A, ensuring efficient operation even under varying load conditions. The regulator is equipped with over-temperature and short-circuit protection, enhancing its reliability and durability. With a quiescent current of 8 mA and a high power supply rejection ratio (PSRR) of 73dB at 120Hz, the LM7805CT offers excellent performance in noise-sensitive applications.

LM7805CT Features

• Fixed Output Voltage: The LM7805CT provides a stable 5V output, making it ideal for applications requiring a consistent power supply.
• High Input Voltage Range: With a maximum input voltage of 35V, this regulator can handle a wide range of input voltages, offering flexibility in power supply design.
• High Output Current: Capable of delivering up to 1.5A of output current, the LM7805CT is suitable for applications with moderate to high current requirements.
• Low Dropout Voltage: A maximum dropout voltage of 2V at 1A ensures efficient operation, minimizing power loss and heat generation.
• Protection Features: Over-temperature and short-circuit protection enhance the reliability and safety of the device, safeguarding it against potential damage.
• Low Quiescent Current: The 8 mA quiescent current ensures minimal power consumption during standby, making it suitable for energy-efficient designs.
• High PSRR: A PSRR of 73dB at 120Hz provides excellent noise rejection, ensuring a clean output voltage for sensitive applications.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the device is not sensitive to moisture, making it suitable for a wide range of environmental conditions.
• REACH Compliance: The LM7805CT is REACH unaffected, ensuring compliance with environmental and safety regulations.

LM7805CT Applications

The LM7805CT is well-suited for a variety of applications where a stable 5V power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering microcontrollers, sensors, and other low-voltage components in devices such as smartphones, tablets, and IoT devices.
• Industrial Equipment: Provides a reliable power source for control systems, instrumentation, and other electronic components in industrial settings.
• Automotive Electronics: Suitable for automotive applications where a stable 5V supply is needed for infotainment systems, ECUs, and other electronic modules.
• Medical Devices: Ensures a stable power supply for medical equipment such as monitoring devices, diagnostic tools, and portable medical instruments.
• Telecommunications: Can be used in base stations, routers, and other telecom equipment to provide a stable power supply for critical components.

Conclusion of LM7805CT

The LM7805CT is a robust and reliable linear voltage regulator that offers a stable 5V output with a wide input voltage range and high output current capability. Its low dropout voltage, protection features, and high PSRR make it an excellent choice for a variety of applications, from consumer electronics to industrial and medical devices. Despite being marked as obsolete, the LM7805CT continues to be a popular choice for engineers and designers who value its simplicity, reliability, and performance.