Feature:1. The maximum output current is 4A, and the short-term maximum output current is 5A2. DC-DC step-down conversion module, the conversion efficiency is 77-93%3. With thermal shutdown, input undervoltage protection, overcurrent protection and output short circuit protection function4. Available in six styles specifications for choice5. Including 2pcs step-down module, fine processing can make sure the stability of the moduleSpecification:Item Type: Step-Down Module Specification(optional): 3V: Input DC 5 ~ 18V, output DC 3V3.3V: Input DC 5 ~ 18V, output DC 3.3V3.7V: Input DC 5 ~ 18V, output DC 3.7V4.2V: Input DC 5 ~ 18V, output DC 4.2V5V: Input DC 6 ~ 18V, output DC 5V6V: Input DC 7 ~ 18V, output DC 6VWorking Frequency: 500KHZConversion Efficiency: 77-93%Static Working Current: 216-18mAOperating Temperature: 40 to + 85Size: Approx. 27 x 18 x 5mm / 1.1 x 0.7 x 0.2inHow to Drive A Motor : 1. Motor drive2. Positive and negative series diodes.Package List:2 x Step-Down ModuleNote:This is a voltage step-down conversion module, and the following conditions must be observed when using it:1. The input voltage cannot be higher than the nominal voltage, otherwise the module will be burned2. The input power must be greater than the output power, otherwise the output voltage will be less than the nominal voltage.3. The output load cannot be greater than the nominal load, otherwise the output voltage will be less than the nominal voltage.4. This is a high power module. Be sure to use a thick enough wire and make good contact.