STMicroelectronics

LD2982BM33R

LD2982BM33R Description

The LD2982BM33R is a linear regulator designed for precision voltage regulation in a wide range of electronic applications. Manufactured by STMicroelectronics, this regulator is part of the Power Management Integrated Circuits (PMIC) category and is known for its robust performance and reliability. The LD2982BM33R features a fixed output voltage of 3.3V and is capable of delivering up to 50mA of output current. It operates with a maximum input voltage of 16V and maintains a low dropout voltage of 0.225V at 50mA, ensuring efficient power delivery even under varying load conditions.

LD2982BM33R Features

The LD2982BM33R offers several key features that make it a standout choice for power management applications:

• Fixed Output Voltage: The regulator provides a stable 3.3V output, which is ideal for powering various electronic components and microcontrollers.
• Low Dropout Voltage: With a maximum dropout voltage of 0.225V at 50mA, the LD2982BM33R ensures high efficiency and minimal power loss, making it suitable for battery-powered devices.
• Low Quiescent Current: The regulator consumes only 150 µA of quiescent current, which is crucial for applications where power consumption needs to be minimized.
• High PSRR: The regulator boasts a Power Supply Rejection Ratio (PSRR) of 45dB at 1kHz, ensuring that the output voltage remains stable even in the presence of input voltage fluctuations.
• Protection Features: The LD2982BM33R includes over-current and over-temperature protection, safeguarding the device and connected components from potential damage.
• Enable Control: The regulator features an enable control pin, allowing users to turn the regulator on and off as needed, which is useful for power-saving applications.
• Surface Mount Packaging: The SOT23-5 package makes it easy to integrate into compact designs and ensures reliable performance in various operating conditions.
• Compliance and Reliability: The LD2982BM33R is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing processes.

LD2982BM33R Applications

The LD2982BM33R is well-suited for a variety of applications due to its high efficiency and precision regulation. Some specific use cases include:

• Battery-Powered Devices: The low dropout voltage and low quiescent current make it ideal for portable electronics and battery-powered systems where power efficiency is critical.
• Microcontroller Power Supplies: The fixed 3.3V output and low noise characteristics ensure stable power delivery for microcontrollers and other sensitive electronic components.
• Consumer Electronics: The regulator's compact size and surface mount package make it suitable for integrating into a wide range of consumer electronics, including smartphones, tablets, and IoT devices.
• Industrial Applications: The over-current and over-temperature protection features make the LD2982BM33R a reliable choice for industrial applications where robustness and reliability are paramount.

Conclusion of LD2982BM33R

The LD2982BM33R from STMicroelectronics is a versatile and efficient linear regulator that offers precise voltage regulation and several advanced features. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for applications requiring high efficiency and stable power delivery. The inclusion of over-current and over-temperature protection ensures reliability, while the enable control feature allows for power-saving optimizations. Despite being marked as obsolete, the LD2982BM33R remains a reliable option for designers seeking a compact, efficient, and robust power management solution.