Texas Instruments

LP2985-33DBVRG4

LP2985-33DBVRG4 Description

The LP2985-33DBVRG4 from Texas Instruments is a fixed 3.3V, 150mA low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. Housed in a compact SOT23-5 package, it features a low dropout voltage of 0.58V at 150mA, making it ideal for battery-powered systems where input voltage headroom is limited. With a wide input voltage range (up to 16V) and ultra-low quiescent current (95 µA), it ensures efficient operation in portable and always-on devices. The device is RoHS3 compliant and REACH unaffected, meeting stringent environmental standards.

LP2985-33DBVRG4 Features

• Fixed 3.3V Output: Ensures stable voltage regulation for sensitive loads.
• Low Dropout (0.58V @ 150mA): Maximizes efficiency in low-voltage applications.
• Ultra-Low Quiescent Current (95 µA): Extends battery life in portable electronics.
• High PSRR (45dB @ 1kHz): Minimizes noise for precision analog/digital circuits.
• Enable Control: Allows power sequencing and shutdown to reduce standby power.
• Robust Protection: Includes over-current, over-temperature, and short-circuit safeguards.
• Surface-Mount (SOT23-5): Compact footprint for space-constrained designs.
• Wide Input Range (Up to 16V): Supports diverse power sources, including unregulated adapters.

LP2985-33DBVRG4 Applications

• Battery-Powered Devices: Ideal for IoT sensors, wearables, and handheld instruments.
• Noise-Sensitive Systems: Suitable for RF modules, ADCs, and audio circuits due to high PSRR.
• Embedded Systems: Powers microcontrollers, FPGAs, and memory in industrial/consumer electronics.
• Automotive Electronics: Reliable for infotainment and telematics (non-safety-critical).
• Medical Devices: Low-noise operation benefits portable diagnostic equipment.

Conclusion of LP2985-33DBVRG4

The LP2985-33DBVRG4 stands out for its low dropout, high PSRR, and ultra-low Iq, making it a superior choice for energy-efficient and noise-sensitive designs. Its robust protection features and compact form factor cater to modern electronics demanding reliability and miniaturization. Whether for portable, industrial, or automotive applications, this LDO delivers precision, efficiency, and durability, backed by Texas Instruments' proven quality.