Texas Instruments

LP2985-50DBVTG4

LP2985-50DBVTG4 Description

The LP2985-50DBVTG4 from Texas Instruments is a low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. This fixed 5V output regulator delivers up to 150mA of load current with an ultra-low dropout voltage of 0.58V (max) at full load, making it ideal for battery-powered and noise-sensitive systems. Its low quiescent current (95 µA) and high PSRR (45dB at 1kHz) ensure efficient operation and superior noise rejection. Packaged in a SOT-23-5 form factor, it is optimized for surface-mount PCB designs where board space is critical.

LP2985-50DBVTG4 Features

• Fixed 5V Output: Stable regulation with ±2% accuracy over line/load/temperature variations.
• Low Dropout Voltage: 0.58V (max) @ 150mA, enabling operation near battery end-of-life.
• Ultra-Low Quiescent Current: 95 µA minimizes power loss in standby modes.
• High PSRR: 45dB at 1kHz for effective noise suppression in RF/wireless applications.
• Robust Protection: Includes over-current, over-temperature, and short-circuit safeguards.
• Enable Pin: Allows external control for power sequencing or shutdown to reduce leakage.
• Wide Input Range: Supports up to 16V, accommodating unregulated supplies.
• Compact Package: SOT-23-5 footprint suits portable and IoT devices.
• Compliance: ROHS3 and REACH compliant, with MSL 1 (Unlimited) moisture sensitivity.

LP2985-50DBVTG4 Applications

• Battery-Powered Systems: Extends runtime in handheld devices (e.g., sensors, wearables) due to low dropout and Iq.
• Noise-Sensitive Analog Circuits: Ideal for ADC/DAC reference voltages or RF modules thanks to high PSRR.
• Industrial Controls: Reliable operation in PLC I/O modules or sensor interfaces with robust protection.
• Consumer Electronics: Powers microcontrollers, memory, and peripherals in smart home/portable gadgets.
• Automotive Aftermarket: Suitable for infotainment or telematics where stable 5V rails are critical.

Conclusion of LP2985-50DBVTG4

The LP2985-50DBVTG4 stands out as a high-performance LDO for applications demanding low noise, efficiency, and compactness. Its low dropout, enable control, and protection features make it superior to basic regulators, while the SOT-23-5 package ensures compatibility with high-density designs. Whether for battery longevity, precision analog, or industrial reliability, this regulator delivers a robust, space-saving solution. Texas Instruments’ quality assurance further ensures compliance with global environmental and performance standards.