LT1761IS5-2.5#TRMPBF - Low Noise, Low Dropout Voltage Regulator

The LT1761IS5-2.5#TRMPBF is a high-performance, low dropout (LDO) voltage regulator from Linear Technology, designed to deliver a fixed output of 2.5 volts with an input voltage range from 1.8V to 20V. This component is part of the LT1761 series, which is renowned for its low noise output, making it an ideal choice for sensitive RF supply applications and portable devices.

With a low quiescent current of 20µA (operating) and less than 0.1µA in shutdown, the LT1761IS5-2.5#TRMPBF is optimized for battery-powered systems where power efficiency is crucial. The device's ability to provide up to 100mA of output current makes it suitable for a wide range of applications, from powering microcontrollers to analog circuits that require a clean and stable power supply.

This voltage regulator boasts an impressive low dropout voltage characteristic, typically just 300mV at full load, which allows it to maintain regulation with minimal difference between the input and output voltages. This feature is particularly beneficial in systems where the supply voltage is not much higher than the regulated voltage, helping to maximize battery life.

The LT1761IS5-2.5#TRMPBF also features overcurrent and overtemperature protection, ensuring the reliability and longevity of both the regulator and the system it is part of. Its no-nonsense SOT-23 package ensures a compact footprint, vital for space-constrained applications.

Additional features such as low output noise (20µV RMS over a 10Hz to 100kHz bandwidth) and the ability to maintain a low-noise environment without the need for an external bypass capacitor set this LDO apart in applications where noise performance is critical. However, an optional bypass capacitor can be added to further reduce output noise to 1.6µV RMS over the same bandwidth.

The LT1761IS5-2.5#TRMPBF is fully specified over the temperature range of -40°C to 125°C, making it suitable for industrial applications subject to harsh conditions. Its robust design and consistent performance make it a reliable choice for engineers and designers looking for a high-quality voltage regulator solution.