Texas Instruments

LP2985AIM5-3.6

LP2985AIM5-3.6 Description

The LP2985AIM5-3.6 from Texas Instruments is a fixed-output, low-dropout (LDO) linear voltage regulator designed to deliver a stable 3.6V output with a maximum current of 150mA. It operates with an input voltage range up to 16V, making it suitable for applications requiring voltage regulation from higher supply rails. With a low dropout voltage of 0.58V at 150mA, it ensures efficient power conversion even when the input voltage is close to the output level. The device features ultra-low quiescent current (95 µA) and a Power Supply Rejection Ratio (PSRR) of 45dB at 1kHz, ensuring minimal noise and high stability in sensitive circuits.

LP2985AIM5-3.6 Features

• Fixed 3.6V Output: Precision-regulated voltage for consistent performance.
• Low Dropout Voltage: 0.58V @ 150mA maximizes efficiency in low-headroom applications.
• Low Quiescent Current: 95 µA minimizes power loss in battery-operated systems.
• High PSRR (45dB @ 1kHz): Excellent noise rejection for clean power delivery.
• Wide Input Range (Up to 16V): Compatible with various power sources.
• Enable Pin Control: Allows for power management via external logic.
• Robust Protection: Includes over-current, over-temperature, and short-circuit safeguards.
• Compact SOT-23-5 Package: Space-saving surface-mount design for portable electronics.
• MSL 1 (Unlimited): Suitable for extended storage and handling.

LP2985AIM5-3.6 Applications

• Battery-Powered Devices: Ideal for IoT sensors, wearables, and handheld electronics due to low Iq and dropout.
• Industrial Systems: Reliable voltage regulation for control modules, sensors, and PLCs.
• Automotive Electronics: Stable power for infotainment, telematics, and low-power ECUs.
• Medical Equipment: Clean power supply for portable monitors and diagnostic tools.
• Consumer Electronics: Used in smartphones, tablets, and audio devices for noise-sensitive circuits.

Conclusion of LP2985AIM5-3.6

The LP2985AIM5-3.6 stands out as a high-performance LDO regulator, combining low power consumption, high PSRR, and robust protection features in a compact package. While it is not recommended for new designs, its proven reliability makes it a solid choice for legacy systems or applications requiring a stable 3.6V supply. Its enable pin and protection mechanisms further enhance its suitability for power-sensitive and space-constrained designs across industrial, automotive, and consumer markets.