LM317AT

The LM317AT from Texas Instruments is a versatile adjustable 3-terminal positive voltage regulator. It is designed to supply currents in excess of 1.5 A over an output voltage range adjustable down to 1.25 V, with a 1% output voltage accuracy.

Key electrical characteristics include a typical line regulation of 0.005%/V and an input-output differential voltage capability of up to 40 V. The device also features constant current limiting that is stable with temperature, and it is protected against over current, thermal overload, and safe-area violations.

This regulator is supplied in a TO-220 package, suitable for through-hole mounting. It operates within a temperature range of -40°C to 125°C. Typically, no output capacitor is required, but an optional one can be added to improve transient response. An input bypass capacitor may be needed if the device is situated more than 6 inches from input filter capacitors.

The LM317AT is well-suited for a wide range of applications requiring adjustable voltage regulation, offering robust protection features and good regulation performance.