SKU: OT3647 Article number: NA411 EAN: 8720618827005
This DC-DC voltage converter converts an input voltage from 6 to 40V to 5V 3A, which you can draw from one of the two USB connectors. For example, you can easily power USB devices from a 12V battery.
A suitable enclosure that you can print directly on your 3D printer can be found here on Thingiverse:
https://www.thingiverse.com/thing:2852700
Technical details:
Connection: 2x USB type A socket
Input voltage: 6 - 40V DC
Output voltage: 5V
Output current: 3A
Efficiency: up to 92%
Switching frequency: 150 kHz
Size: 66.7x18.8x19mm
Weight: 18g
Scope of delivery:
1x 5V 3A LM2596 DC-DC step-down with USB