Texas Instruments

LP2985-33DBVTE4

LP2985-33DBVTE4 Description

The LP2985-33DBVTE4 from Texas Instruments is a high-performance, low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. This fixed 3.3V output regulator delivers up to 150mA of load current with an ultra-low dropout voltage of 0.58V @ 150mA, making it ideal for battery-powered systems. Its 16V maximum input voltage and 95 µA quiescent current ensure efficient operation in portable and low-power designs. Packaged in a compact SOT23-5 form factor and available in tape & reel (TR), it is optimized for automated assembly.

LP2985-33DBVTE4 Features

• Low Dropout Voltage: 0.58V at full load (150mA) maximizes efficiency in battery-operated devices.
• Ultra-Low Quiescent Current: 95 µA minimizes power loss in standby modes.
• High PSRR: 45dB at 1kHz ensures stable output in noisy environments.
• Robust Protection: Integrated over-current, over-temperature, and short-circuit safeguards enhance reliability.
• Enable Control: Allows power sequencing and shutdown to reduce leakage current.
• Wide Input Range: Supports up to 16V, accommodating varying power sources.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.

LP2985-33DBVTE4 Applications

This LDO excels in applications requiring stable, low-noise power with minimal board space:

• Portable Electronics: Smartphones, wearables, and IoT devices benefit from its low Iq and dropout.
• Battery-Powered Systems: Ideal for backup power, sensors, and wireless modules.
• Industrial Controls: Provides reliable voltage regulation in PLCs, instrumentation, and automation.
• Medical Devices: Suited for low-power diagnostic equipment due to its precision and protection features.
• Automotive Accessories: Powers infotainment, telematics, and ADAS subsystems within voltage limits.

Conclusion of LP2985-33DBVTE4

The LP2985-33DBVTE4 stands out for its low dropout, high PSRR, and compact footprint, making it a superior choice for power-sensitive designs. Its combination of efficiency, protection, and enable control makes it versatile for portable, industrial, and automotive applications. While marked as Last Time Buy, it remains a reliable solution for existing designs requiring a proven 3.3V LDO regulator. Texas Instruments' reputation for quality ensures dependable performance in critical systems.