STMicroelectronics

LD2982AM50R

LD2982AM50R Description

The LD2982AM50R is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 5V with a maximum output current of 50mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. Despite its small size, the LD2982AM50R is equipped with several advanced features, including an enable control function, over-current protection, and over-temperature protection. The regulator operates efficiently with a maximum dropout voltage of 0.225V at 50mA, ensuring minimal power loss and high efficiency. Its power supply current is limited to a maximum of 1.2mA, and the quiescent current is a mere 150µA, contributing to its low power consumption. The LD2982AM50R also boasts a power supply rejection ratio (PSRR) of 45dB at 1kHz, which is crucial for maintaining stable output voltage under varying input conditions.

LD2982AM50R Features

• Output Type: Fixed
• Input Voltage Range: Up to 16V
• Output Voltage: Fixed at 5V
• Output Current: Up to 50mA
• Number of Regulators: 1
• Output Configuration: Positive
• Supply Current (Max): 1.2mA
• Dropout Voltage (Max): 0.225V @ 50mA
• Quiescent Current (Iq): 150µA
• PSRR: 45dB (1kHz)
• Control Features: Enable
• Protection Features: Over Current, Over Temperature
• Package: Tape & Reel (TR)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Product Status: Obsolete
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8542.39.0001

LD2982AM50R Applications

The LD2982AM50R is ideal for a variety of applications where a stable and low-power 5V supply is required. Its compact size and low dropout voltage make it particularly suitable for battery-powered devices and portable electronics where space and efficiency are critical. The enable control feature allows for easy power management, making it a good fit for applications that require dynamic power control. The regulator's robust protection features ensure reliable operation in harsh environments, making it suitable for industrial and automotive applications. Specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics such as handheld devices, wearables, and IoT sensors.
• Embedded Systems: Suitable for microcontroller power supplies and other low-power embedded applications.
• Automotive Electronics: Can be used in automotive systems where a stable 5V supply is needed.
• Industrial Control Systems: Provides a reliable power source for various industrial control modules and sensors.

Conclusion of LD2982AM50R

The LD2982AM50R from STMicroelectronics is a versatile linear voltage regulator that offers a balance of efficiency, performance, and reliability. Its fixed 5V output and low dropout voltage make it an excellent choice for applications requiring a stable power supply. The inclusion of enable control and comprehensive protection features further enhances its suitability for a wide range of applications. Despite being marked as obsolete, the LD2982AM50R remains a reliable option for designers seeking a compact, low-power regulator with advanced features.