K21 5A CC CV Step-down Power Supply Module Lithium Battery Charger

SKU: 1941841

1.64 1.64 Piece 1.6400000000000001 USD

¥ 12.00

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Product Description:

  • High power, high efficiency, 5A, low ripple;

  • Three in one:

          Use as an ordinary buck module with overcurrent protection capability;

          As a variety of voltage value lithium battery, battery, nickel-cadmium nickel-metal hydride battery (battery pack) charger for solar panels, wind turbines                and other occasions;

          Use as a high-power LED constant current driver module;

  • With constant voltage and constant current two modes, there are indicators to indicate which mode the module is currently in;

  • When used as a lithium battery charger, you can set the float voltage and charge current, with indicator light

  • With current limit protection, even if the output is short circuit, it will not burn out the module.


  • Input voltage: 4-38V

  • Output voltage: 1.25-36V continuously adjustable

  • Output current: adjustable, up to 5A

  • Output power: maximum 75W

  • Working temperature: -40~+85 degrees

  • Operating frequency: 180KHz

  • Conversion efficiency: up to 96%

  • Short circuit protection: Yes (limited current 8A)

  • Over-temperature protection: Yes (automatic shutdown output after over-temperature)

  • Reverse input protection: No, (Please input high-current diode in series if necessary)

  • Installation method: 4 pieces of 3mm wire

  • Wiring: terminal or welding terminal, V-IN is input, V-OUT is output

  • Module size: length 61.7mm width 26.2mm height 15mm