Adafruit
USB-C PD to 5.5/2.1mm Barrel Jack Adapter - 20V
· MPN: ADA6033
This handy adapter lets you power compatible gear with a 5.5mm / 2.1mm DC barrel socket from a USB-C PD source. It is useful when you want to use a modern US...
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This handy adapter lets you power compatible gear with a 5.5mm / 2.1mm DC barrel socket from a USB-C PD source. It is useful when you want to use a modern USB-C power supply with equipment that expects a standard barrel jack input.
Because USB-C is reversible, the adapter can be flipped around to work as either a left-angle or right-angle connection. It provides 20V DC output at up to 3A, depending on what your USB PD power adapter can supply.
Please check your power supply and device before use. If the USB PD supply does not explicitly support 20V output, this adapter will provide another lower voltage instead. The barrel output is centre positive, which is the most common configuration.
Specifications:
- USB side: USB Type C 3.1 5V cable connection
- Barrel side: 5.5mm / 2.1mm DC barrel socket/device connection
- Output voltage: 20V DC
- Output current: up to 3A (or whatever the power adapter can do)
- Polarity: centre positive
- Embossed marking: "19.5V"
- USB PD note: "19.5V" is not a valid and known USB PD option; they mean 20V
- Power supply requirement: if your USB PD power supply does not explicitly have 20V out, this cable will provide some other lower voltage
If you need centre negative output, use a 5.5mm / 2.1mm DC barrel polarity reversing cable adapter on the end.
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- USB PD power supply
- A charger or power adaptor that uses USB Power Delivery to negotiate higher voltages and currents over USB-C. It matters because the device and cable must support the required PD power level, otherwise a board, soldering iron, laptop, or other product may charge slowly or not run at all.
- USB-C
- USB-C is a small, reversible USB connector that can carry power, data and, on some devices, video over a single cable. The same connector can range from charging only to high-speed data, so the functions a given port actually supports vary.
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