LP3961

The Texas Instruments LP3961 is a fast, ultra-low-dropout linear regulator designed for a 2.5-V to 7-V input supply. It provides a stable output current of up to 0.8 A with high accuracy.

Key electrical specifications include a typical dropout voltage of 240 mV, a noise level of 150 µVrms, and a PSRR of 15 dB at 100 KHz. The regulator offers fixed output voltage options such as 1.8 V, 2.5 V, 3.3 V, and 5 V, with a typical accuracy of ±1%. It also features an enable pin for control and an ERROR flag to indicate output status.

Designed for efficiency and reliability, the LP3961 includes overtemperature and overcurrent protection. It operates within a junction temperature range of -40°C to 125°C. The regulator requires a minimum load capacitance of 33 µF and is available in SOT-223 and TO-263 packages, suitable for surface mount applications.

This device is well-suited for various power management applications where stable and accurate voltage regulation is critical, especially in space-constrained designs due to its low dropout voltage and compact package options.