This is an OKI-78SR-5/1.5-W36H-C DC/DC regulator! They're highly efficient ~90%, and provide 5V @ 1.5A (7.5W) from a 7V to 36V input.
Unlike noisy UBECs, this regulator provides < 75 mV peak-to-peak ripple.
The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.