Texas Instruments

LP2981-33DBVRE4

LP2981-33DBVRE4 Description

The LP2981-33DBVRE4 is a fixed-output linear voltage regulator designed by Texas Instruments, offering a stable 3.3V output with a maximum output current of 100mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. With a maximum input voltage of 16V, it provides a robust solution for a variety of electronic devices requiring a reliable power supply. The regulator features a low dropout voltage of 0.37V at 100mA, ensuring efficient operation even at low input-to-output voltage differentials.

LP2981-33DBVRE4 Features

• Output Type: Fixed at 3.3V, providing a stable voltage supply for sensitive electronics.
• Input Voltage Range: Up to 16V, offering flexibility in power source selection.
• Output Current: Capable of delivering up to 100mA, suitable for low to medium current applications.
• Low Dropout Voltage: 0.37V at 100mA, ensuring high efficiency and minimal power loss.
• Low Quiescent Current: 95 µA, contributing to energy efficiency and prolonged battery life in portable devices.
• High PSRR: 63dB at 1kHz, effectively reducing noise and ripple in the output voltage.
• Protection Features: Over current, over temperature, and short circuit protection, enhancing reliability and durability.
• Control Features: Enable functionality, allowing for dynamic control and power management.
• Compliance: REACH Unaffected and ROHS3 Compliant, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for a wide range of manufacturing environments.
• Package Type: Tape & Reel (TR), facilitating automated assembly processes.

LP2981-33DBVRE4 Applications

The LP2981-33DBVRE4 is ideal for applications requiring a stable and efficient power supply with minimal space requirements. Its low dropout voltage and high PSRR make it particularly suitable for battery-operated devices, where maintaining a stable output voltage as the battery discharges is crucial. The regulator's low quiescent current ensures minimal power consumption, extending battery life. Its compact SOT23-5 package and surface-mount design make it ideal for space-constrained applications such as:

• Portable electronic devices
• Embedded systems
• IoT devices
• Wearable technology
• Medical devices

Conclusion of LP2981-33DBVRE4

The LP2981-33DBVRE4 from Texas Instruments is a versatile and efficient linear voltage regulator, offering a stable 3.3V output with a maximum current of 100mA. Its low dropout voltage, high PSRR, and low quiescent current make it an excellent choice for battery-operated and space-constrained applications. The inclusion of over current, over temperature, and short circuit protection ensures reliability and durability, making it a robust solution for a variety of electronic devices. Despite being marked as obsolete, the LP2981-33DBVRE4 remains a valuable component for existing designs and applications where its unique features and performance benefits are required.