STMicroelectronics

LD2979M50TR

LD2979M50TR Description

The LD2979M50TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 5V and a maximum output current of 50mA. This regulator is housed in a S compactOT23-5 package, making it suitable for surface mount applications. With a maximum input voltage of 16V and a dropout voltage of 0.6V at 50mA, the LD2979M50TR ensures efficient power management and stable performance. The regulator features a quiescent current of 170 µA and a power supply current of up to 13 mA, contributing to its energy-efficient operation. Additionally, it includes protection features such as over-current and over-temperature protection, ensuring reliability and safety in various operating conditions. The LD2979M50TR also offers an enable control feature, providing flexibility in power management applications. Despite being marked as obsolete, this regulator remains a viable option for specific applications due to its robust performance and compliance with industry standards such as REACH and RoHS3.

LD2979M50TR Features

• Fixed Output Voltage: Provides a stable 5V output, ideal for applications requiring a precise and consistent power supply.
• High Efficiency: With a dropout voltage of only 0.6V at 50mA, the LD2979M50TR ensures minimal power loss and high efficiency.
• Low Quiescent Current: The 170 µA quiescent current minimizes power consumption, making it suitable for low-power applications.
• Protection Features: Over-current and over-temperature protection enhance the reliability and safety of the regulator.
• Enable Control: The enable feature allows for dynamic control over the regulator's operation, providing flexibility in power management.
• Compact Packaging: The SOT23-5 package is ideal for surface mount applications, saving space on the PCB.
• Compliance: The LD2979M50TR is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards.

LD2979M50TR Applications

The LD2979M50TR is well-suited for a variety of applications where a stable 5V power supply is required. Its compact size and efficient operation make it ideal for:

• Consumer Electronics: Powering small devices and peripherals that require a stable 5V supply.
• Industrial Equipment: Providing reliable power to sensors, microcontrollers, and other low-power components.
• Telecommunications: Ensuring stable power for communication modules and embedded systems.
• Automotive: Suitable for low-power applications within automotive electronic systems.

Conclusion of LD2979M50TR

The LD2979M50TR, despite being marked as obsolete, remains a robust and reliable option for applications requiring a stable 5V power supply. Its low dropout voltage, low quiescent current, and protection features make it an efficient and safe choice. The enable control feature adds flexibility, while its compact SOT23-5 package ensures it fits seamlessly into modern PCB designs. Although newer alternatives may be available, the LD2979M50TR continues to offer significant advantages in specific applications, making it a valuable component in the power management portfolio of STMicroelectronics.