4A 80W DC DC Step Up Boost Converter 2-24v To 3-30v Constant Voltage Current USB Regulated Power Supply Board With Heat Sink

Features: Special architecture, support 2V low voltage input, no fear of low voltage, especially suitable for 18650 high power boosting; The power is large, the input current can be up to 15A, the output current is 4A; when the input is 3.7V, the output power can reach 45W, and when the input is 12V, the output power can reach 80W; Perfect protection mechanism, input anti-anti-burn, input over-current protection, input under-voltage protection, output anti-backflow, constant voltage and constant current, can be directly connected to battery charging; High efficiency, dual-stage filtering and low rple, reliable and stable performance! Parameters: Input voltage: 2 ~ 24V Output voltage: 3 ~ 30V, pay attention to the USB port and the output port directly connected, is the adjustable voltage port 3-30V, not 5V port! ! ! Input current: up to 15A Output current: Maximum 4A (CC point device is the limit current adjustment potentiometer. When the current limit is reached, the CC indicator lights up and enters the constant current mode; the product is the boost structure. The regulation limit current cannot be directly shorted to the output terminal, but can be counterclockwise first. Adjust to the minimum, turn the clock clockwise and increase the current) Output power: 3.7V input, maximum 45W; 12V input, maximum power 80W; Output rple: two-stage filtering, low rple output! Conversion efficiency: 82~95% Input overcurrent protection: 15A fuse Input anti-re protection: high efficiency MOS type Input undervoltage protection: To prevent overdischarge of the lithium battery, please solder the 5.6k resistance at R22 in the lower left corner of the module, starting above 3.5V and stopping below 3V. The factory default works at 2V voltage. If other levels of undervoltage protection threshold are required, you can calculate it yourself, or contact customer service. The calculation formula is R22=12500/(U-0.75v) ohm, where U is the desired undervoltage protection threshold voltage (stop Voltage). Board size: 80*31.5*20.5mm Weight: 36g Note: This product is a boost structure. The regulation limit current cannot be directly shorted to the output terminal. The CC potentiometer can be adjusted to the minimum counterclockwise. After the battery is connected, it can be rotated clockwise to increase the current. This product is a boost structure. The minimum output voltage is approximately equal to the input voltage, so the output current cannot be set from 0. The minimum output current is approximately the input voltage divided by the load resistance value. Module input IN-disable and output OUT-short, otherwise the constant current function will be invalid. Please ensure that the power of the power supply is greater than the power required by the output load. Please reduce the power usage when the module is hot! USB output port is not 5V output, directly connected to the output port, the highest adjustable voltage to 30V, such as charging mobile phones or other digital products or compatible with your other valuable instruments, clear the USB output voltage, any damage caused by us Without warranty, we only have the ability to pay for the module and shping costs. Please read the product descrtion carefully before using it. Damage caused by improper use will not be compensated.

About shping
Shping and Pack All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.