If you are looking for the next new step-down regulator for your solution, look no further than the LT8606 line from Linear Technology.
Capable of a wide 3.0 to 42 V input range, this small (14.7 mm2 10-Lead MSOP or 4.0 mm2 8-pin DFN package) lead-free, monolithic switching regulator provides 350 mA of continuous current with a 2.5 µA quiescent current. Highly efficient with a 35 ns switch-on time, the LT8606 comes with a variety of temperature ranges (extended -40 to 125 oC, industrial -40 to 125 oC or high -40 to 150 oC), the aforementioned 8- or 10-lead package and a choice of tube or tape and reel delivery.