Texas Instruments Voltage Regulators - Linear LP3982ILDX-ADJ/NOPB

The LP3982ILDX-ADJ/NOPB is a micropower, ultra low-dropout (LDO) linear voltage regulator capable of delivering up to 300mA of output current. It features an adjustable output voltage range from 1.25V to 6V, making it versatile for various applications. The device operates with a low quiescent current of 90µA typical and a shutdown mode current of only 1nA, which is beneficial for battery-powered applications. With a typical dropout voltage of 120mV at 300mA, the LP3982 allows for efficient utilization of battery energy by enabling operation closer to the battery's end-of-life voltage. It is stable with small ceramic capacitive loads, requiring only 2.2µF for output stability. The regulator includes features such as thermal overload protection, current limiting, and fault detection, ensuring reliable operation. The LP3982 is packaged in an 8-pin MSOP or LLP format, compatible with similar devices, which aids in space-constrained designs. Its low output voltage noise of 37µV RMS (10Hz to 100kHz) and high power supply rejection ratio (PSRR) of 60dB typical make it suitable for sensitive applications like wireless handsets and portable electronics.