LT1763IDE-1.8#PBF - Low Noise, Low Dropout Voltage Linear Regulator

The LT1763IDE-1.8#PBF is a high-performance, low dropout linear regulator from Linear Technology, designed to deliver a well-regulated 1.8V output with an input voltage range from 1.8V up to 20V. This component is part of the LT1763 series, known for its low noise output, making it an ideal choice for sensitive RF supply applications and high-end audio equipment.

With a dropout voltage of just 300mV at full load, the LT1763IDE-1.8#PBF is capable of supplying 500mA of output current, which makes it suitable for a wide range of applications, including battery-powered devices where efficiency is critical. Furthermore, its no-load quiescent current is a mere 30µA, which increases the battery life in portable applications.

The device comes in a 12-lead DFN package, offering a compact footprint for space-constrained applications. The LT1763IDE-1.8#PBF features a range of built-in protection mechanisms, including overcurrent and overtemperature protection, ensuring reliable operation under various conditions.

Its standout feature is the low noise performance, with a typical output noise of just 20µV RMS over a 10Hz to 100kHz bandwidth when used with an optional 10nF bypass capacitor. This makes it exceptionally well-suited for precision analog circuits, such as high-end audio equipment and sensitive RF applications, where power supply noise can significantly impact performance.

For design flexibility, the LT1763IDE-1.8#PBF allows for adjustability of the output voltage with external resistors, although this particular model is factory preset to 1.8V. The regulator is also stable with ceramic output capacitors, which are smaller, more reliable, and have lower ESR than tantalum capacitors.

Linear Technology's LT1763IDE-1.8#PBF is a robust and versatile choice for designers looking for a high-quality voltage regulator that combines low dropout, low noise, and high reliability in a compact package.