3A Step-Down Switching Regulator 7-55VDC to 1.25-50VDC LM2576HV-adj High Quality Beware to Add To Cart !!! Only sold by Thaikits for product warrantee and free technical support. IC switching by LM2576HV-adj ( High Voltage ) 52kHz switching freq. Input voltage 7-55VDC / Output voltage 1.25-50VDC at 3A 25 turn trimpot to adjust output voltage / 10A Therminal both input and output PCB diameter 5.8cm x 7.0cm