Wide input voltage: 5V-32V; Wide Output Voltage: 1.25V-35V Built- 4A efficient MOSFET switches enable efficiency up to 94%; (LM2577 current is 3A) High switching frequency of 400KHz, the ripple is smaller and smaller . (LM2577 frequency only 50KHz) Input Current: 4A(MAX); no-load 18mA (5V input , 8V output , no-load is less than 18mA. Higher the voltage , the greater the load current ) Output Ripple:50mV ( the higher the voltage , the greater the current , the greater the ripple ) Load Regulation: 0.5% Voltage Regulation: 0.5% Operating Temperature:-40 ~ +85 Size: 48.1x24.9x14.0 mm Weight: 17g Application: 1.Car regulato 2.solar photovoltaic 3.wind and other applications of voltage instability color:Photo color Material:ABS Package Contents: 2 x Buck Boost Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.