This is LM2596HV DC-DC 3-40V  to 1.23-37V 3A Adjustable Power Supply Module, conversion efficiency up to 92%. It can short-circuit with protection limiting self-recovery.

Features:

- Module Properties: non-isolated step-down module (buck)
- input voltage: 3-40V
- Output voltage: 1.23-37 adjustable
- Output Current: Rated 2A. (Max. 3A, Please install heatsink to enhance heat dissipation.)

       if output power greater than 15W, please install heat sink
- Efficiency: Up to 92% 
- Operating Temperature: Industrial (-40°c to +85°c) (output power 10W or less) 
- Switching frequency: 150KHz

- Dimentions: 43.2 x 21 x 14mm
 

For Datasheet,  click here