The LD2981CU33TR from STMicroelectronics is a highly precise and reliable voltage regulator designed to meet the needs of a wide range of applications. This device stands out for its low dropout voltage and low ground current, making it an ideal choice for battery-powered devices where energy efficiency is critical.

Key Features

• Output Voltage: The LD2981CU33TR provides a fixed output voltage of 3.3V, which is suitable for powering a variety of standard electronic components and integrated circuits.
• Low Dropout: With a low dropout voltage, this regulator operates efficiently even when the input voltage is close to the output voltage, ensuring minimal power loss and heat generation.
• High Accuracy: The output voltage is guaranteed to be accurate within ±1%, which is essential for sensitive electronic circuits that require stable and precise voltages.
• Current Capacity: It can deliver up to 100 mA of output current, satisfying the requirements of numerous low-power applications.
• Low Ground Current: The device features a low ground current, which significantly improves the battery life of portable applications.
• Thermal Shutdown and Current Limiting: Built-in protection features such as thermal shutdown and current limiting enhance the safety and reliability of the regulator under various operating conditions.

Applications

The LD2981CU33TR is versatile and can be used in a range of applications, including:

• Battery-powered equipment
• Portable consumer devices
• Mobile phones and PDAs
• Portable multimedia players
• Microcontroller power supply

Package and Availability

This voltage regulator is available in a compact SOT-89 package, which is suitable for surface-mount technology (SMT) and occupies minimal space on a printed circuit board (PCB). The "TR" suffix indicates that the device is provided in tape and reel packaging, facilitating automated assembly processes for high-volume production.

STMicroelectronics is known for their commitment to quality and reliability, and the LD2981CU33TR voltage regulator is no exception. It is designed to meet the rigorous demands of modern electronic devices, ensuring consistent performance and longevity.