This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.8″, but it allows a typical continuous output current of up to 5 A. Typical efficiencies of 85% to 95% make this regulator well suited for high-power applications like powering motors or servos. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

Dimensions:

Size: 0.7″ × 0.8″ × 0.35″1
Weight: 3.0 g1
General specificatpions:
Minimum operating voltage: 6 V2
Maximum operating voltage: 38 V
Continuous output current: 5 A3
Output voltage: 5 V
Reverse voltage protection?: Y
Maximum quiescent current: 0.8 mA