The TPS76325DBVR is a low-noise, low-dropout (LDO) voltage regulator from Texas Instruments, designed for noise-sensitive applications in communication systems, medical devices, and precision analog circuits. This device delivers a fixed 3.3V output voltage with an input voltage range of 2.0V to 5.5V, supporting a maximum output current of 500 mA. It features ultra-low output noise (15 µVrms from 10 Hz to 100 kHz) and high power-supply rejection ratio (PSRR) up to 70 dB at 100 kHz, ensuring clean power delivery to sensitive components. Housed in a compact SOT-23-5 package (2.9 mm × 2.1 mm), it enables space-efficient designs while maintaining high performance.

Key Features

The TPS76325DBVR combines low quiescent current (50 µA) with fast transient response, minimizing power consumption in battery-operated systems. It includes overcurrent, overtemperature, and reverse-voltage protection to safeguard connected circuits. The device operates over an extended temperature range (-40°C to +125°C) and offers a dropout voltage as low as 200 mV at full load, ensuring stable operation in fluctuating input conditions. Its high PSRR and low noise floor make it ideal for RF front-ends, ADC/DAC power rails, and other applications requiring minimal power supply interference.

Applications

Primarily used in wireless communication modules and sensor systems, the TPS76325DBVR is critical for powering analog-to-digital converters (ADCs), radio frequency (RF) transceivers, and precision instrumentation in medical imaging and test equipment. It is widely employed in industrial IoT devices, automotive infotainment systems, and consumer electronics such as smartphones and wearables, where low-noise power delivery is essential for signal integrity. Its compact size and thermal resilience also suit aerospace and ruggedized portable devices.

Summary

The TPS76325DBVR excels in delivering clean, stable power with minimal noise and high reliability, making it a top choice for applications demanding pristine power rails in compact, high-performance systems. Its combination of low dropout voltage, robust protection, and wide operating range positions it as a key component in noise-sensitive electronics across industrial, medical, and consumer markets. This LDO is indispensable for engineers prioritizing signal integrity and power efficiency in analog and mixed-signal designs.