Texas Instruments

LP2980AIM5X-5.0

LP2980AIM5X-5.0 Description

The LP2980AIM5X-5.0 from Texas Instruments is a fixed 5V, 50mA low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. Housed in a compact SOT23-5 package, it operates with an input voltage range up to 16V and delivers a stable 5V output with a low dropout voltage of 0.22V at 50mA. Despite its obsolete status, it remains a reliable choice for legacy designs due to its robust performance, low quiescent current (95 µA), and high power supply rejection ratio (63dB at 1kHz). The device includes enable control and comprehensive protection features such as over-current, over-temperature, and short-circuit protection, ensuring system reliability.

LP2980AIM5X-5.0 Features

• Fixed 5V Output: Precision-regulated output with ±2% accuracy.
• Low Dropout Voltage: 0.22V at 50mA enables efficient operation with minimal headroom.
• Ultra-Low Quiescent Current: 95 µA minimizes power loss in battery-powered applications.
• High PSRR: 63dB at 1kHz ensures noise immunity in sensitive circuits.
• Protection Features: Integrated safeguards against over-current, over-temperature, and short-circuit conditions.
• Enable Pin: Allows for power-saving mode when the regulator is disabled.
• Compact SOT23-5 Package: Ideal for space-constrained PCB designs.

LP2980AIM5X-5.0 Applications

• Portable Electronics: Ideal for battery-powered devices like sensors, wearables, and handheld instruments due to its low Iq.
• Industrial Control Systems: Provides stable voltage for microcontrollers, ADCs, and DACs in noisy environments.
• Automotive Electronics: Suitable for non-critical 5V subsystems, leveraging its wide input range and robustness.
• Legacy Designs: Continues to serve as a drop-in solution for older systems requiring a reliable 5V LDO.

Conclusion of LP2980AIM5X-5.0

The LP2980AIM5X-5.0 excels in delivering stable, low-noise 5V power with minimal dropout and quiescent current, making it a strong candidate for portable, industrial, and legacy applications. While marked as obsolete, its high PSRR, robust protection features, and compact form factor ensure continued relevance in designs prioritizing efficiency and reliability. Engineers seeking a proven 5V LDO for low-power systems will find this regulator a dependable solution.