Raspberry Pi 3 Model B+
This compact (0.4″ × 0.5″) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 7.5 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output NO Reverse voltage protection!
The D24V22Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 36V. These regulators have a typical quiescent current load of around 1 mA, and an enable pin can be used to put the boards into a low-power state that reduces the quiescent current to approximately 5 μA to 10 μA per volt on the VIN .