OSKJ 1.5v - 30v 3A DC Constant Current Power Buck Converter - ADJ LED

Brand: mklec Select
SKU Code: 133-238-2101
Availability: 3
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Price: $5.75 $2.75

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OSKJ 1.5v - 30v 3-amp DC constant current power voltage buck converter with LED adjustment allows you to adjust the current and voltage output and is ideal as a driver for high-power 1-watt, 3-watt, etc. LEDs or charging rechargable batteries.
This is the same as our 133-238-1101 module, but features an adjustable current LED.

NOTE: Counter-clockwise decreases setting, Clockwise increases setting


  • Non-isolated step-down constant current, constant voltage module (CC CV) charging module
  • High-power constant current LED driver, battery charger (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charger, solar panels, wind turbines


  • Input voltage: 7-35V
  • Output voltage: 1.25-30V adjustable
  • Dropout voltage: 2V
  • Output Current: 3A (more than 15W, please install heat sink, this item does NOT include heat sink)
  • Constant current range :0-3A (adjustable)
  • Adjustable current LED: constant current value * (0.1) default



Overloading or misuse of this module WILL damage it and can possibly result in a fire.  Make sure you have properly calculated the load before using this device and always use adequate circuit protection (such as fuses) to prevent damage.


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