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 start 5. 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 Module Current Output:3A(4A Maximum) Voltage Input Range:5.5~36V Conversion Efficiency:95% Maximum Output Voltage Range:Larger than 1.221V Conversion Rate:500KHz Output:3.3V 5V 9V 12V -12V ADJ Size:77 x 100mm / 3.03 x 3.94in Package List: 1 x Module Note: The sum of load voltage and supply voltage must be less than 36V.