3pcs 36/24/12/9V to 5V 3A Step Down Module 4USB Interface Car charging Solar Buck Power Supply

Feature Synchronous rectification3A output currentIntegrated power MOSFET switch95 efficiencyProgrammable soft startStable low ESR outputCycle by cycleFixed frequency 340KHInput undervoltage lockoutSystem protection excessive current limitOvervoltage protection and thermal shutdownSize 37 x 47 x 18mm width x length x height Tips Each double layer USB shares a 5v3A chip dual insurance solution two double layer USB independent power supply each 3A the total current is 6A The output voltage is between 5 08 5 18vWiring method connect the positive voltage of the voltage of 7 to 38v to the input positive the negative voltage to the negative of the lower icon the four USB will have a stable 5v voltage plug your mobile phone data cable into the USB used The output is convenient for those devices that do not have a USB cable It is for professional use only If you dont understand it you dont need to worry about this interface Built in Apple identification resistor 47k 56k 2 7v Apples charging current is about 2 4A Android phone is about 1A Please use a good quality data cable Near the terminal block there is a diode ss54 which is an anti reverse diode Professionals can short circuit it and can change it to a fuse and toss it by itself Q My mobile phone current is only 1A Will your 3A converter burn my phone A No 3A means that the high current that this converter can withstand is 3A As long as your device can be used below 3A current the voltage is the