USB to 2.1mm DC Booster Cable - 12V

Rating:

100% of 100

SKU: ADA2778 Brand: Adafruit

This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and it will give...

$14.80 AUD, inc GST

$13.45 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 26th of Nov

Quantity Discounts:

10-25 $13.05 (exc GST)
25+ $12.78 (exc GST)

This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and it will give you a higher DC voltage! It's a handy way to power 12V powered devices with a center-positive 2.1mm DC barrel jack from a USB port. We also have a version that provides 9V, and if you just need a passthough cable, here's one for 5VDC.

These are rated at 500mA output, but you can go a little higher, Adafruit pulled 700mA and Adafruit got a little voltage droop but it worked fine. Probably best not to draw 700mA continuously though!

Here's Adafruit's measurements for various current draws when Adafruit set Adafruit's bench supply to provide a steady 5V voltage

50mA (12.4V output), 150mA, 83% efficiency
100ma (12.4V), 290mA in, 86% efficiency
200ma (12.3V): 570mA in, 86% efficiency
300ma (12.2V): 870mA in, 84% efficiency
500ma (12.1V): 1500mA in, 81% efficiency
700ma (11.4V): 2140mA in, 75% efficiency

So, overall there's a 85% efficiency at low current draw that drops do about 80% at high current use. There's also a 3 mA quiescent current. Note that often times the USB port voltage can droop too, and in addition you may have power losses with any thin or low quality cables with high resistivity!

Technical Details

Cable Length: ~1.2m / ~47"
Weight: 34.6g

This product is listed in:

Power & Batteries>Others

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