USB to 2.1mm DC Booster Cable - 9V

Rating:

100% of 100

SKU: ADA2777 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...

$14.30 AUD, inc GST

$13.00 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Fastest delivery: Tomorrow* Disclaimer:
The shipping address needs to be in the AusPost next day network and eParcel Express is chosen during checkout. On rare occasions, orders may be delayed by up to one business day due to AusPost pickup timings or for order verifications.

Quantity Discounts:

10-25 $12.61 (exc GST)
25+ $12.35 (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 9V powered devices with a center-positive 2.1mm DC barrel jack from a USB port. We also have a version that provides 12V, 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 (9.0V output), 100mA, 90% efficiency
100ma (8.95), 205mA in, 87% efficiency
200ma (8.9V): 410mA in, 86% efficiency
300ma (8.8V): 620mA in, 85% efficiency
500ma (8.8V): 1060mA in, 83% efficiency
700ma (8.8V): 1550mA in, 80% efficiency

So, overall there's a 90% 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: 35.1g

This product is listed in:

Power & Batteries>Others

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