Texas Instruments

LP2981A-28DBVRE4

LP2981A-28DBVRE4 Description

The LP2981A-28DBVRE4 is a fixed output linear voltage regulator designed by Texas Instruments, offering a reliable and efficient solution for voltage regulation in various electronic applications. This regulator is housed in a compact SOT23-5 package, making it suitable for space-constrained designs. It is designed to provide a stable output voltage of 2.8V with a maximum output current of 100mA. The regulator operates with an input voltage range up to 16V, ensuring compatibility with a wide range of power sources.

LP2981A-28DBVRE4 Features

• Output Type: Fixed at 2.8V, ensuring consistent power supply to connected devices.
• Input Voltage Range: Up to 16V, providing flexibility in power source selection.
• Output Current: Capable of delivering up to 100mA, suitable for low to medium power applications.
• Low Dropout Voltage: A maximum dropout voltage of 0.37V at 100mA ensures high efficiency, even at low input-to-output voltage differentials.
• Low Quiescent Current: Only 95 µA, minimizing power consumption in standby mode.
• High PSRR: 63dB at 1kHz, providing excellent noise rejection and stable output voltage.
• Control Features: Includes an enable function, allowing for dynamic control of the regulator's operation.
• Protection Features: Over-current, over-temperature, and short-circuit protection ensure robustness and reliability.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.
• Mounting Type: Surface mount, ideal for modern PCB designs and automated assembly processes.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for storage and handling in various environments.

LP2981A-28DBVRE4 Applications

The LP2981A-28DBVRE4 is ideal for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices and portable electronics, where power efficiency and noise reduction are critical. The regulator's compact size and surface mount package also make it a preferred choice for dense PCB layouts in consumer electronics, IoT devices, and industrial control systems.

Conclusion of LP2981A-28DBVRE4

The LP2981A-28DBVRE4 from Texas Instruments is a versatile and efficient linear voltage regulator that offers a fixed 2.8V output with a maximum current of 100mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a wide range of applications. Despite being marked as obsolete, the LP2981A-28DBVRE4 remains a valuable component for engineers and designers seeking a compact, efficient, and robust power solution.