**LT1761IS5-BYP#TRMPBF: A 20V, 300mA Low-Noise LDO Regulator in a SOT-23 Package**

In the world of power management, the demand for compact, efficient, and clean voltage regulation is ever-increasing. The **LT1761IS5-BYP#TRMPBF** from Analog Devices stands out as a premier solution, specifically engineered to meet these critical requirements. This integrated circuit is a **low-dropout (LDO) linear regulator** capable of delivering up to **300mA of output current** from an input voltage as high as **20V**. Its exceptional performance is packed into a minuscule **SOT-23 package**, making it an ideal choice for space-constrained applications where board real estate is at a premium.

One of the most significant advantages of the LT1761 is its remarkably **low noise output performance**. For noise-sensitive applications such as RF circuitry, precision instrumentation, and medical devices, power supply noise can severely degrade signal integrity and overall system accuracy. The LT1761 addresses this challenge head-on. By utilizing the optional **BYP (bypass) capacitor pin**, the device's internal reference noise can be drastically reduced to levels as low as **20μVRMS** over a 10Hz to 100kHz bandwidth. This feature allows designers to achieve a clean and stable power rail essential for powering sensitive analog and mixed-signal components.

Furthermore, the regulator maintains excellent **line and load regulation**, ensuring a stable output despite fluctuations in the input voltage or changes in the current drawn by the load. With a **low dropout voltage** of typically 300mV at full load, it continues to regulate effectively even when the input voltage hovers very close to the output level, thereby enhancing overall system efficiency and extending battery life in portable devices. The wide input voltage range of up to 20V provides significant design flexibility, allowing it to be used in a variety of industrial and automotive environments.

The inclusion of built-in protection features such as **current limiting and thermal shutdown** ensures the device's robustness and long-term reliability. These safeguards protect the regulator and the downstream circuitry from damage during fault conditions like short circuits or excessive power dissipation.

**ICGOOODFIND**: The LT1761IS5-BYP#TRMPBF is a superior choice for designers seeking a high-performance, miniature LDO. Its combination of a **20V input capability**, **300mA output current**, **ultra-low noise**, and **robust protection** in a SOT-23 package makes it exceptionally versatile for powering critical circuits in communications infrastructure, portable medical equipment, and advanced automotive systems.

**Keywords**: Low-Dropout (LDO) Regulator, Low Noise, 20V Input, 300mA Output, SOT-23 Package.