LM317SX

The LM317SX from Texas Instruments is a versatile adjustable positive linear voltage regulator. It is designed to supply currents in excess of 1.5 A over an output voltage range of 1.25 V to 37 V. This regulator is easy to use, requiring only two external resistors to set the output voltage.

Key electrical specifications include a typical load regulation of 0.1% and a typical line regulation of 0.01%/V. It also provides 80 dB of ripple rejection, ensuring clean power output. The device includes built-in protection features such as current limiting, thermal overload protection, and safe area protection.

Packaged in a TO-263 surface-mount package, the LM317SX operates within a temperature range of 0°C to 125°C. Its adjustable nature and robust protection make it suitable for a wide variety of power supply applications where output voltage needs to be precisely controlled and adjusted.

This regulator series offers better line and load regulation than standard fixed regulators. All overload protection circuitry remains functional even if the adjustment terminal is disconnected. Typically, no capacitors are needed unless the device is situated more than a certain distance from the input source.