This step-down (buck) power supply module converts its input voltage of 6V to 24V to a fixed 5V USB output at up to 3A output current. It is suitable for providing a regulated 5V USB output to charge your mobile phone, tablet or any other USB-powered device.Features:The max output current 3A, long time use 2.1A, enough use.Flat copper inductor, improves conversion efficiency.Input reverse polarity protection, will not damage when input connect incorrect.Using the latest USB identification circuit, perfectly compatible for IPHONE/Android phones, for IPAD etc.High-quality USB port.Output voltage indicator (RED).Output overvoltage protection: input 1.5A fuse, output 5V have 300W TVS tube clamp protection.Specifications:Module properties: non-isolated buck module (BUCK) synchronous rectificationInput voltage: DC 6-24VOutput voltage: 5.1-5.2VOutput current: 3A max. (please enhance heat dissipation when full load using)Conversion efficiency: up to 97.5% (6.5V step down to 5V 0.7A)Switch frequency: 500KHzOutput ripple: about 10mV (12V to 5V 3A) 20m bandwidthOutput indicator: output voltage indicator is redOperating temperature: industrial grade (-40 to + 85) (the higher the ambient temperature, the lower the output power)Full load temperature: 30CStatic current: 0.85 mALoad regulation: 1%Voltage Regulation: 0.5%Dynamic response speed: 5% 200uSConnection mode: weldingInput mode: weldingOutput mode: USBPackage size: 45 * 45 * 20mm / 1.77 * 1.77 * 0.79inPackage weight: 9g / 0.32ouncesNote: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.Package List:1 * Step Down Module