ITEM NAME:DC-DC 9V/12V to 5V 8A Step Down Power Bank Board 3 USB Charging Module Borad Product Description Description: Description: 1. The module has two USB charging interfaces and one USB charging interface without protocol. Output maximum current 4A, with over-current protection function. 2. USB protocol charging interface can automatically identify the type of charging device, and shake hands with the device through the corresponding USB charging protocol, so as to obtain the maximum charging current and save charging time on the premise of protecting the charging device. It can charge most mobile phones in for Apple, for Samsung and other markets. Specification: Input voltage: DC 5.6-14V Output voltage: DC 4.8-5.6V adjustable, default 5V Maximum output current: 4A Output overcurrent protection: when the output current is detected to be greater than 4A, stop the output immediately Input overcurrent protection: if the input current is greater than 2A, stop the output immediately Short circuit protection: Yes Built in protocol: Divider1/Divider2/Divider3 charging protocol (for Apple); D + / D- set to 1.2V mode (for Samsung); BC1.2DCP and CTISYD/T1591-2009 charging protocol Product size: 39 * 38 * 16mm/1.53*1.49*0.62'' Operation Description: 1. There are three USB interfaces on the module. The identification "Auto 2.4W" indicates that the USB port automatically recognizes the type of charging device, and "noIC" indicates that the USB port does not recognize the charging device. Devices that require a protocol to charge, such as for iPhone, can only be charged at the "Auto 2.4W" USB port. 2. The input voltage range of the module is within DC 5.6-14V, and the maximum output current is 4A. If it exceeds 4A, the module will automatically shut down the output. In order to protect the rear module, the input terminal has a 2A self recovery fuse. When the input current exceeds 2A, the fuse becomes high resistance and the output is closed. Therefore, if the output current.If it exceeds 4A, the module will automatically shut down the output. There are three USB interfaces on the module. The identification "Auto 2.4W" indicates that the USB port automatically recognizes the type of charging device, and "noIC" indicates that the USB port does not recognize the charging device.
