Texas Instruments

LP2992AIM5-1.5/NOPB

LP2992AIM5-1.5/NOPB Description

The LP2992AIM5-1.5/NOPB from Texas Instruments is a fixed-output linear voltage regulator designed to deliver a stable 1.5V output at up to 250mA of load current. With an input voltage range extending up to 16V, this regulator is optimized for low-power applications requiring high efficiency and reliability. It features a low dropout voltage of 0.85V (max) @ 250mA, ensuring efficient operation even with minimal headroom. The device is housed in a compact SOT-23-5 package, making it suitable for space-constrained designs. Although marked as obsolete, it remains a robust choice for legacy systems due to its proven performance and compliance with ROHS3 and REACH standards.

LP2992AIM5-1.5/NOPB Features

• Fixed 1.5V Output: Ensures precise voltage regulation for sensitive low-voltage circuits.
• Low Quiescent Current (95 µA): Minimizes power consumption in battery-operated devices.
• High PSRR (45dB @ 1kHz): Effectively suppresses input noise, ideal for noise-sensitive applications.
• Enable Control: Allows for power management via an external enable pin.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection for enhanced reliability.
• Wide Input Range (Up to 16V): Supports diverse power sources, including unregulated supplies.
• Surface-Mount SOT-23-5 Package: Optimized for compact PCB layouts.

LP2992AIM5-1.5/NOPB Applications

This regulator is particularly suited for:

• Portable and Battery-Powered Devices: Such as handheld instruments, IoT sensors, and wearables, where low quiescent current is critical.
• Noise-Sensitive Analog Circuits: Including audio amplifiers and precision measurement systems, benefiting from high PSRR.
• Embedded Systems: Where stable 1.5V rails are needed for microcontrollers, FPGAs, or memory modules.
• Industrial Control Systems: Leveraging its robust protection features for harsh environments.

Conclusion of LP2992AIM5-1.5/NOPB

The LP2992AIM5-1.5/NOPB offers a reliable, low-power solution for applications demanding a fixed 1.5V supply. Its combination of low dropout, high PSRR, and integrated protections makes it a standout choice for legacy designs or systems requiring stable voltage regulation. While obsolete, its performance and compliance with environmental standards ensure continued suitability for specific use cases where replacement alternatives may not meet exact requirements. Engineers valuing efficiency, noise immunity, and compact form factor will find this regulator a compelling option.