The LM2941SX/NOPB is a versatile low-dropout (LDO) voltage regulator from Texas Instruments, designed to provide stable and clean 5V output in a wide range of electronic devices. Housed in an 8-pin SOIC package, this regulator supports an input voltage range of 7V to 40V, making it suitable for both battery-powered and line-operated systems. The device features an adjustable output voltage option down to 1.27V, alongside the fixed 5V version, catering to various application needs. It also includes a unique load-dump protection feature that ensures system stability during sudden voltage spikes.

Key Features

This LDO regulator offers a dropout voltage as low as 1.2V at full load current, ensuring efficient operation even when the input voltage approaches the regulated output voltage. It provides up to 1A of continuous output current with integrated thermal overload and current-limiting protection. The LM2941SX/NOPB operates over a temperature range of -40°C to +125°C, making it reliable in harsh environments. Additionally, it includes a shutdown pin for reducing power consumption to less than 10 µA, which is ideal for battery-operated devices. Its internal reference voltage of 1.27V ±2% ensures high accuracy across all conditions.

Applications

Primarily used in automotive electronics, including dashboard instruments and infotainment systems, the LM2941SX/NOPB also finds applications in industrial controls, telecommunications equipment, and consumer electronics. Its ability to handle wide input voltages makes it suitable for use in ruggedized portable devices, where fluctuating power sources are common. Furthermore, its low dropout voltage and thermal protection make it ideal for sensitive analog circuitry requiring stable power supply, such as in audio equipment and sensor modules.

Summary

The LM2941SX/NOPB combines robust performance, wide input voltage capability, and protective features, making it a reliable choice for demanding applications in automotive, industrial, and consumer sectors. Its compact SOIC package and operational efficiency facilitate easy integration into space-constrained designs while maintaining high reliability under varying environmental conditions. This regulator is essential for engineers designing systems that require a dependable and efficient power solution.