STMicroelectronics

LD2979M30TR

LD2979M30TR Description

The LD2979M30TR is a fixed-output linear regulator designed for low-power applications, manufactured by STMicroelectronics. This regulator is housed in a compact SOT23-5 package, making it suitable for space-constrained designs. It features a fixed output voltage of 3V and can deliver up to 50mA of output current. The input voltage range extends up to 16V, providing flexibility in power supply options. The regulator is designed with a low dropout voltage of 0.6V at 50mA, which enhances efficiency and performance in low-input voltage scenarios. It also includes protection features such as over-current and over-temperature protection, ensuring reliable operation under various conditions.

LD2979M30TR Features

• Fixed Output Voltage: 3V, ensuring stable power supply for sensitive electronic components.
• High Input Voltage Range: Up to 16V, allowing compatibility with a wide range of power sources.
• Low Dropout Voltage: 0.6V at 50mA, which is beneficial for applications where the input voltage is close to the output voltage.
• Low Quiescent Current: 170 µA, minimizing power consumption during idle states.
• High PSRR: 63dB at 120Hz, providing excellent noise rejection and improving the quality of the output voltage.
• Protection Features: Over-current and over-temperature protection to safeguard the regulator and connected circuits.
• Enable Control: Allows for dynamic control of the regulator's operation, enhancing flexibility in power management.
• Surface Mount Package: SOT23-5, suitable for compact and high-density PCB designs.
• Compliance: REACH unaffected and ROHS3 compliant, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of manufacturing environments.

LD2979M30TR Applications

The LD2979M30TR is ideal for a variety of low-power applications where a stable and efficient power supply is required. Some specific use cases include:

• Portable Devices: Ideal for battery-powered devices such as smartphones, tablets, and wearables, where low power consumption and small form factor are critical.
• Consumer Electronics: Suitable for powering sensitive analog circuits in audio equipment, cameras, and other consumer electronics.
• Industrial Applications: Can be used in low-power sensors, controllers, and monitoring devices where reliability and efficiency are paramount.
• Medical Devices: Appropriate for medical equipment that requires precise and stable power supply, such as portable diagnostic tools and wearable health monitors.

Conclusion of LD2979M30TR

The LD2979M30TR from STMicroelectronics is a robust and efficient linear regulator designed for low-power applications. Its fixed 3V output, low dropout voltage, and comprehensive protection features make it a reliable choice for a wide range of electronic devices. The compact SOT23-5 package and low quiescent current further enhance its suitability for space-constrained and power-sensitive designs. While the product is now obsolete, its legacy in power management solutions remains significant, and it continues to offer a reliable and efficient power supply option for various applications.