Feature:1. High conversion efficiency which is up to 95% under the best condition.2. Wide voltage output range, the minimum of the voltage can be adjusted to drop to 1.221V.3. Internal compensation minimizes the number of external components.4. Fixed 500kHz slew rate. Overcurrent protection and thermal shutdown. Internal soft start5. With a switch enable pin, the off state has only 17uA quiescent current.6. Bold high current trace + hole + window + heat sink makes the line temperature rise smaller, more stable and lasting.7. Input 48V, self-recovery fuse makes the power supply safer.Specification:Item Type:Voltage Step-Down ModuleCurrent Output:3A(4A Maximum)Voltage Input Range:5.5~36VConversion Efficiency:95% MaximumOutput Voltage Range:Larger than 1.221VConversion Rate:500KHzOutput:3.3V 5V 9V 12V -12V ADJSize:77 x 100mm / 3.03 x 3.94in Package List:1 x ModuleNote:The sum of load voltage and supply voltage must be less than 36V.