Texas Instruments

LP2981A-30DBVT

LP2981A-30DBVT Description

The LP2981A-30DBVT is a fixed output linear regulator designed for applications a requiring stable 3V supply with a maximum output current of 100mA. Manufactured by Texas Instruments, this regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a compact SOT23-5 surface-mount package. Despite being marked as obsolete, the LP2981A-30DBVT remains a reliable choice for low-power applications due to its robust design and performance characteristics.

LP2981A-30DBVT Features

The LP2981A-30DBVT offers several key features that make it suitable for a variety of applications:

• Fixed Output Voltage: Provides a stable 3V output, ensuring consistent power supply for sensitive electronics.
• High Input Voltage Range: Capable of operating with input voltages up to 16V, offering flexibility in power source selection.
• Low Dropout Voltage: With a maximum dropout voltage of 0.37V at 100mA, the regulator maintains efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: Consumes only 95 µA in quiescent mode, making it ideal for battery-powered devices where power conservation is critical.
• Enable Control Feature: Allows for dynamic control of the regulator's operation, enabling power-saving modes and reducing power consumption during idle periods.
• Protection Features: Equipped with over-current, over-temperature, and short-circuit protection, ensuring reliable operation and safeguarding against potential faults.
• High Supply Power Rejection Ratio (PSRR): Achieves 63dB at 1kHz, minimizing the impact of input voltage variations on the output voltage.
• Compliance and Packaging: RoHS3 compliant and REACH unaffected, ensuring environmental safety. Packaged in a tape and reel format for easy handling and integration into manufacturing processes.

LP2981A-30DBVT Applications

The LP2981A-30DBVT is well-suited for applications where a stable, low-power supply is essential. Specific use cases include:

• Battery-Powered Devices: Ideal for portable such electronics as handheld devices, wearables, and IoT sensors where power efficiency and low quiescent current are critical.
• Low-Power Microcontrollers: Provides a stable power supply for microcontrollers and other low-power ICs, ensuring reliable operation even in low-power modes.
• Consumer Electronics: Suitable for applications in consumer electronics where a compact, efficient power supply is required.
• Industrial Control Systems: Can be used in industrial applications where a reliable, low-power regulator is needed to power critical components.

Conclusion of LP2981A-30DBVT

The LP2981A-30DBVT, despite its obsolete status, remains a valuable component for applications requiring a stable 3V supply with low power consumption. Its low dropout voltage, high PSRR, and comprehensive protection features make it a robust choice for a variety of low-power. applications While newer alternatives may offer additional features, the LP2981A-30DBVT continues to provide reliable performance and is an excellent option for engineers and designers seeking a proven, efficient power management solution.