DC-DC Step Down Converter LM2596

Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)
Switching Frequency: 150KHz
Rectifier: Non-Synchronous Rectification 
Module Properties: Non-isolated step-down module (buck)
Short circuit protection: current limiting, since the recovery 
Operating temperature: Industrial grade (-40  to +85 ) (output power 10W or less) 
Full load temperature rise: 40 
Load regulation: ± 0.5%
Voltage regulation: ± 2.5%

Specification:

Input voltage:4-35V

Output voltage:1.23-30V(Adjustable)

Output current:Rated current is 2A,maximum 3A(Additional heatsink is required)

Dimension:48*23*14mm(L*W*H)