500 mA adjustable buck — input range and switching frequency
The LM2597M-ADJ/NOPB is a SIMPLE SWITCHER® step-down regulator from Texas Instruments, delivering up to 500 mA from a 4.5 V to 40 V input rail. The adjustable output sits between 1.2 V and 37 V, set by a resistor divider. Switching at 150 kHz, the part avoids the higher-frequency noise that can couple into sensitive analog front-ends — a deliberate trade-off for designs where conducted EMI matters more than inductor size.
Temperature grade and package fit
No synchronous rectifier is integrated, so the external Schottky diode must be selected for the output current and voltage.