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 (-40°c to +85°c) (if ambient temperature exceeds 40 °c, please lower power use, or to enhance heat dissipation)
Full load temperature rise:45°c
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