The Texas Instruments LM2594 and LM2597 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) regulator, capable of driving 0.5A loads with excellent load and line regulation. These devices are available in fixed output voltages of 3.3V, 5V, and 12V with an adjustable output version available. The LM2597 series is very similar to the LM2594 series, with the exception of added supervisory and performance features. The inductor selection process is the same for both series.