ITEM NAME:6-24V 12V/24V to 5V 3A Car USB Charger Module DC Buck step down Converter D1B3 6-24V 12V/24V to 5V 3A Car USB Charger Module DC Buck step down Converter D1B3 The max output current 3A, long time use 2.1A, enough use; New design, 3 solid state ceramic capacitors(MCC), more safe and low ripple. Synchronous rectification, High efficiency, 6.5V to 5V 0.7A can up to 97.5%, 12V to 5V 1A can up to 94%. This mini DC-DC step down voltage converter module suppor 6-24V voltage input and 5V 3A output with input polarity reverse protection and output overvoltage portection, short circuit protecion. It adopts synchronous rectification technology ensure ultra high power conversion up to 97.5% to take fully use of your input power. On-board female type A USB port with identification circuit perfectly fit for iphone ipad and andriod smart phones. Color: Red Material: metal Input Voltage DC 6-24V Output Voltage: 5.1-5.2V Maximum Output Current:3A Static Current: 0.85mA Maximum Conversion Efficiency: 97.5% Switching Frequency: 500KHz Load Regulation: +/- 1% Voltage Regulation: +/- 0.5% Dynamic Response Speed: 5% 200uS Protection: output short circuit protection,output overvoltage protection,input polarity reverse protection Board Size: 26.4 X 15 X 7.4mm/ 1.04 X 0.59 X 0.29inch (L*W*H) Package Included: 1X DC Voltage Regulator Step Down Buck Converter Power Supply USB Car Charger Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.