3-V to 65-V, 0.3-A ultra-small synchronous buck converter with 6 A IQ 9-VQFN-HR -40 to 150
Texas Instruments
Texas Instruments - PLMR36503RFRPET
$1.63
Texas Instruments - LMR36503RFRPER
$2.78
Texas Instruments - LMR36503R5URPER
$2.93
