STMicroelectronics

LD2979M38TR

LD2979M38TR Description

The LD2979M38TR is a fixed-output linear regulator designed to provide a stable 3.8V output voltage with a maximum output current of 50mA. Manufactured by STMicroelectronics, this regulator is housed in a SOT23-5 package, making it suitable for surface mount applications. It features a maximum input voltage of 16V and a dropout voltage of 0.6V at 50mA, ensuring efficient operation even at low input-to-output differentials. The regulator includes protection features such as over-current and over-temperature protection, enhancing its reliability and robustness. Additionally, it offers an enable control feature for power management flexibility. With a quiescent current of 170 µA and a power supply current of 13 mA, the LD2979M38TR is optimized for low-power applications. Despite its obsolescence status, it remains REACH unaffected and ROHS3 compliant, ensuring environmental and regulatory compliance.

LD2979M38TR Features

• Fixed Output Voltage: Provides a stable 3.8V output, ideal for applications requiring a precise voltage supply.
• High Input Voltage Range: Supports up to 16V input, offering flexibility in power source selection.
• Low Dropout Voltage: At 0.6V @ 50mA, it ensures efficient operation with minimal power loss.
• Protection Features: Over-current and over-temperature protection safeguard the regulator and connected circuits.
• Enable Control: Allows for dynamic power management, enabling or disabling the regulator as needed.
• Low Quiescent Current: 170 µA ensures minimal power consumption in standby mode.
• Surface Mount Package: The SOT23-5 package is compact and suitable for space-constrained designs.
• Regulatory Compliance: REACH unaffected and ROHS3 compliant, ensuring environmental and regulatory standards are met.

LD2979M38TR Applications

The LD2979M38TR is well-suited for a variety of applications where a stable, low-power, and compact regulator is required. These applications include:

• Consumer Electronics: Ideal for portable devices and gadgets that require precise voltage regulation and low power consumption.
• Industrial Equipment: Suitable for sensors and control systems that need reliable power management in harsh environments.
• Telecommunications: Can be used in low-power communication modules and IoT devices.
• Medical Devices: Applicable in portable medical equipment where precise voltage control and low power are critical.
• Automotive Electronics: Useful in auxiliary systems where a compact and efficient regulator is necessary.

Conclusion of LD2979M38TR

The LD2979M38TR from STMicroelectronics is a versatile and efficient linear regulator designed for low-power applications. Its fixed 3.8V output, low dropout voltage, and comprehensive protection features make it a reliable choice for a wide range of electronic devices. Despite being marked as obsolete, its regulatory compliance and performance benefits continue to make it a viable option for new and existing designs.