3A Step Down with current control for battery charging

If you have any questions on this product please feel free to contact us.

*Disclaimer: The images are merely illustrative.

Features:

1.Fixed turn the LED current to 0.1 times the value of the constant current (charge when used to identify whether the battery is full);
2. Increased input reverse polarity protection diode;
3. Using dedicated reference IC, and high-precision sampling resistor, so that the constant current is more stable, (20 degrees to 100 degrees, the constant current 1A, when the temperature drift of less than 1%).

Particularly suitable for LED driver.

Also suitable for the following applications:

• High-power LED constant current drive
• Lithium battery charger (including ferroelectric)
• 4V, 6V, 12V, 14V, 24V battery charger
• Nickel cadmium, nickel metal hydride battery pack charger
• Solar panels and wind turbines

Specifications:

• Module Properties: non-isolated constant current and voltage module
• Rectification: non-synchronous rectification
• Input voltage: 7~35Vdc
• Output voltage: 1.25~30Vdc
• Output current: adjustable maximum 3A
• Conversion efficiency: 92% (the highest)
• Switching frequency: 150KHz
• Output ripple: 50mV (max) 20M bandwidth
• Load Regulation: ± 0.5%
• Voltage Regulation: ± 2.5%
• Operating Temperature: -40 ° to +85 °
• Weight:13 g
• Color: as picture show
• Size:46mmx23mmx10mm/1.81\"x0.91\"x0.39\"(inch) (approx)

Battery use:

• Make sure of the voltage and current of the battery you need to charge
• Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage
• Potentiometer Adjustment Direction: Clockwise (increase), counterclockwise (decrease)
• Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make sure the output current to the expected charging current value
• The charge current of transfer LED is default 0.1 times of the charging current (constant current value)
• Connect to the battery and try to charging (for previous 5 steps, module input terminal is connected to power source, output load is NOT connected to batteries).

LED Constant Current Driver Use:

• Make sure operating current and Max operating Voltage of the LED you need to drive.
• Adjust the constant voltage potentiometer to make sure the output Voltage is up to LED Max operating Voltage.
• Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer. To make sure the output current to the expected LED operating current.
• For the above 3 steps, module input terminal is connected to power source, output load is NOT connected.

Package Included:

1 x LM2596 DC-DC Step-down Adjustable DC-DC Module