Adafruit
USB to 2.1mm DC Booster Cable - 9V
This USB to DC booster cable has an integrated boost converter that steps up 5V USB power to 9V DC, output through a centre-positive 2.1 mm barrel jack. It's...
This USB to DC booster cable has an integrated boost converter that steps up 5V USB power to 9V DC, output through a centre-positive 2.1 mm barrel jack. It's a convenient way to power 9V devices from any USB port — whether from a computer, USB wall charger, or battery pack.
Rated for 500 mA continuous output, the cable achieves up to 90% efficiency at low current draw. It's ideal for powering Arduino boards, effects pedals, routers, and other 9V devices without a dedicated power supply.
Key Features
- Integrated Boost Converter – Steps up 5V USB to 9V DC output
- 2.1 mm Centre-Positive Barrel Jack – Standard DC connector for 9V devices
- 500 mA Rated Output – Suitable for most 9V accessories
- Up to 90% Efficiency – Efficient power conversion at low to moderate loads
- 3 mA Quiescent Current – Low idle power consumption
Efficiency at Various Loads
- 50 mA – 9.0V output, ~90% efficiency
- 100 mA – 8.95V output, ~87% efficiency
- 200 mA – 8.9V output, ~86% efficiency
- 300 mA – 8.8V output, ~85% efficiency
- 500 mA – 8.8V output, ~83% efficiency
Ideal For
- Powering Arduino and other 9V dev boards from USB
- Guitar effects pedals and audio equipment
- Routers, modems, and small electronics
- Portable setups powered from USB battery packs
Package Contents
- 1× USB to 2.1 mm DC Booster Cable (9V)
Jargon buster
Plain-language definitions for the technical terms used above.
- boost converter
- A boost converter is a power circuit that raises a lower input voltage to a higher output voltage. It matters here because the board can power a sensor that needs a higher supply voltage while still using a single connector for power and data.
Find this product in
Brands
Power & Batteries
Related Tutorials
Free guides on learn.littlebird.com.au
