Buck Regulator, Switching, 3.0 A, 15 V 3.0 A, Adjustable 1.23-37 V, 52 kHz

SIMPLE SWITCHER® 40V, 3A Low Component Count Step-Down Regulator 5-TO-220

TEXAS INSTRUMENTS - LM2576T-ADJ - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 4V-40Vin, 1.23V-37Vout, 3Aout, TO-220-5
SIMPLE SWITCHER® 40V, 3A Low Component Count Step-Down Regulator 5-TO-220
IC 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5, TO-220, 5 PIN, Switching Regulator or Controller