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Buck

Buck drivers step voltage down.  For example, if you wanted to use 2 or 3 li-ion cells in series to power an XM-L2, you need a buck driver.  

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This buck driver is a great budget single-mode solution for 1S-3S input and a 3V LED.  It runs ..
$3.99
17mm MTN-MAXlp HP 1A-5.5A Low-Profile Buck Driver - 5V-18V
The MTN-MAXlp HP is a high performance constant current LED buck (step down) driver, unparalleled in..
$18.95
Based on 2 reviews.
20mm MTN-MAXlp HP 4A-5.5A Low-Profile Buck Driver - 5V-18V
This is the highest performance 20mm buck driver currently available.  It can drive a 3V LED wi..
$21.75
22mm MTN-MAX 1A-6A Buck Driver - 5V-18V
Looking for a high-performance, programmable, and compact 22mm buck driver?  Look no further! &..
$19.99
Looking for a high-performance, programmable, and compact 26mm buck driver?  Look no further! &..
$20.39
Looking for a high-performance, programmable, and compact 27.5mm buck driver?  Look no further!..
$20.55
LD-29 2.8A 1 or 2 Cell Driver - 20.5mm
Specifications: Suitable for 1 or 2 lithium ion cells (18650, 26650, 14500, etc.) Input volt..
$6.75
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