DC-DC 7-35V to 1.25-30V CC CV LED Driver Buck Converter Power Supply Charging Step Down Module

Specifications: Input voltage: 7-35V Output voltage: 1.25-30V Output Current: Max 3A ( If more than 15W, please install the heat sink, this item do not include heat sink) Constant current range :0-3A (adjustable) Min Voltage pressure: 2V Output power: natural cooling 15W Conversion efficiency: 85% (the higher the output voltage, the higher the efficiency Operating Temperature: Industrial (-40c to +85c) (if ambient temperature exceeds 40 c, please lower power use, or to enhance heat dissipation) Full load temperature rise: 45c No-load Current: typical 10mA (12V to 4.2V) Load Regulation: 1% Voltage Regulation: 0.5% Current Accuracy and temperature: Actual Testing, Temperature changes from 20 degrees To 100 degrees, Constant current value change Less than 1% (constant current value 1A) Dynamic response speed: 5% 200uS Potentiometer adjustment direction:Clockwise (increase),Counterclockwise (decrease) Indicator LED: Charging LED Red, Full Charge LED Green Output Short-circuit Protection:YES Input Reverse Polarity Protection:YES Output Prevent Countercurrent: YES Battery Charging Method: 1. Make sure the recharge battery float voltage and charge current, input voltage of the module. 2. adjust constant voltage regulator, the output voltage about 3V. 3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current gets a predetermined charge current value; 4. Adjust Constant regulator allows Output voltage gets the float voltage; 5. connected to the battery, try charging. (1,2,3,4 step input connect power, output do not connect battery.) LED Constant Current Driver Usage: 1. Make sure LED current and the maximum operating voltage; 2. adjust constant voltage regulator, the output voltage about 3V. 3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current gets a predetermined LED working current value; 4. Adjust Constant regulator allows Output voltage get LED maximum working voltage; 5. Connected to the LED, test. (1,2,3,4 take steps input connect power, output do not connected LED.) Applications: Battery charger (including ferroelectric) 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charger, solar panels, wind generators. Solar Panel, Wind generator voltage regulator, Car Power Supply. Package Includes: 1 x DC-DC 7-35V to 1.25-30V Converter Power Supply Module