Hi all,
This has already been mentioned in some past topics, such as this, and this.
Specs specify that maximum Vin voltage should not exceed 5V. However from the BQ24195L Datasheet I can't see any reason why a voltage of up to 12V cannot be accepted. Apart from the LED there's nothing else in that voltage path that would be compromised.
Am I missing anything ?
You can not have USB power connected if you do higher voltage the 5V....The board wasn't designed for such high voltages.
Thanks for the quick reply......I forgot to mention that this will be operating in standalone mode, with no USB connected. Would that work ?
Alternatively ...if USB is connected, I think that removing SIA817 would solve the problem right ?
If you only want to supply up to 6V through vin....An external buck converter or regulator can take the 12V down to 5V.
The MOSFET only switches between external 5V or VUSB....If you want to take the risk remove it and apply 12V....
@maauzerr
The product page states:
5V: This pin outputs 5V from the board when powered from the USB connector or from the VIN pin of the board. It is unregulated and the voltage is taken directly from the inputs.
How can it supply 5V from the Vin pin?
The schematics are wrong.
when powered from the USB connector or powered from the VIN pin of the board.
The schematics are correct.
As I see it, the 5V requirement is only there because the datasheet committed to feed 5V from the 5V output pin (Beside Vin), not because of any of the onboard electronics. Moreover the function of the PFET is only there so that the USB voltage does not feed back into Vin.
Hence 12V can be fed from Vin, if and only if :
Hence if the arduino is not feeding anything else, and is not connected to the PC (i.e operting in standolne mode), it can be safely operated using 12V.
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