Texas Instruments

LP2982AIM5-3.0/NOPB

LP2982AIM5-3.0/NOPB Description

The LP2982AIM5-3.0/NOPB is a fixed-output, low-dropout (LDO) linear voltage regulator from Texas Instruments, designed to deliver a stable 3V output at up to 50mA of load current. With a wide input voltage range of up to 16V, this regulator is optimized for applications requiring precise voltage regulation in space-constrained environments. Packaged in a compact SOT23-5 form factor, it is ideal for portable and battery-powered systems. Although marked as obsolete, it remains a reliable choice for legacy designs due to its robust performance and compliance with ROHS3 and REACH standards.

LP2982AIM5-3.0/NOPB Features

• Low Dropout Voltage: 0.33V (max) @ 80mA ensures efficient operation even with low input voltages.
• Ultra-Low Quiescent Current: 95 µA minimizes power loss in standby modes, extending battery life.
• High PSRR: 45dB @ 1kHz provides excellent noise rejection for sensitive analog circuits.
• Integrated Protection: Features over-current, over-temperature, and short-circuit protection for enhanced reliability.
• Enable Control: Allows for power management via an external enable pin, reducing standby power consumption.
• Wide Operating Range: Supports input voltages up to 16V, accommodating various power sources.

LP2982AIM5-3.0/NOPB Applications

• Portable Electronics: Ideal for wearables, IoT sensors, and handheld devices due to its low Iq and small footprint.
• Battery-Powered Systems: Suitable for backup power supplies and energy-efficient applications where dropout voltage is critical.
• Industrial Controls: Used in sensor interfaces, PLCs, and low-power microcontrollers requiring stable 3V rails.
• Consumer Electronics: Fits into smart home devices, audio equipment, and peripherals needing noise-free regulation.

Conclusion of LP2982AIM5-3.0/NOPB

The LP2982AIM5-3.0/NOPB excels in delivering low-noise, efficient voltage regulation for space-constrained and power-sensitive designs. Its high PSRR, low dropout, and integrated protections make it a dependable choice despite its obsolete status. While newer alternatives exist, this regulator remains a proven solution for legacy systems requiring 3V regulation with minimal power overhead. Engineers should evaluate replacement options for future-proofing but can confidently deploy this IC in existing applications.