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Boost/Buck 3-18V 5 Modes 24mm 30W Circuit Board


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This circuit comes with low voltage protection at 5.7V, so please use two or more li-ion for best result.

Input Voltage: 3-18V (recommend use of 2-4pcs 4.2V 18650 or 4-6pcs 3V CR123A)
Output current (single LED): 5A
Output current (3 or 4 XM-L LED wired in serial): 3A
Modes: High - Medium - Low - Strobe - SOS (cycle) (with Memory feature), shut off to cycle to next mode

Low voltage Protection: When using single or two Li-ion batteries, input voltage becomes 5.7V, LED will flash twice per 3 seconds and then turn off after 3 minutes.
Over-heat Protection: When internal temperature becomes too hot, driver will automatically ramp down its brightness, make sure you "heat-sinked" the driver.

LED power output: single LED (8-10W), three or four LED wired in serial (25-30W)
Input requirement: Input current is about 3-3.5A, make sure the wiring and switch is capable of handling this type of high current.

 *When driving 3 or 4 XML (serial) with 1-2 li-ion (serial), this circuit acts as boost circuit. When using 3-4 lion wired in serial, this circuit becomes a buck and temperature regulated circuit.

Dimensions:
Battery board measures 26mm
Main driver measures 24mm
Total height measures 17mm

Attention: One piece Circuit Board with 3~4 pieces "Thermally conductive adhesive". To make it better to thermally conductive, please smash the "Thermally conductive adhesive" and filled it between circuit board and body.



 
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Reviews Return to top

Ownership verified by KD 2 cell minium :(
Posted by Kajman  on   12/29/2011 10:16:46 AM
Avg.Rating: star star star star

Strengths:

Ready from the box to drive strong setups. Interesting cell protection when using 2 or more. 3.8A current drain on 1 cell, 2.4A by 2 cells when one SST50 connected.

Weaknesses:

Cell protection does not recognize that 1 cell is connected and then in spite driver works, you can not use it :( Producer should give us way to turn protection off for single cell usage. The driver is quite large :) No possibility to turn disco modes off.

Summary:

Nice driver, I will try to use it on some 3x xml flashlights and come back.
Ownership verified by KD A good replacement driver
Posted by a7851212  on   10/29/2015 11:22:49 PM
Avg.Rating: star star star star

Strengths:

These are easy to install and fit well into a TR 3XT6 I wanted to upgrade. The current at the tail cap with three XM-L2 s and two cells was 4.25 amps. @ 7.7 volts which works out to 32.77 watts then subtract for driver loss.

Weaknesses:

Although it says these will run a single LED I wouldn't try it with an XM-L. The output is 12 Volts +/- so I decided not to tempt fate and see if it could tell the difference between 1 LED and 3.

Summary:

These are a good replacement but not exciting if you want more current.
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