Sorry for such a basic question but I've searched for like half an hour and haven't found anything that looked 100% definitive.
I have a 12v DC power source, and then a voltage converter to 5v DC from eBay with these specs:
* Input voltage range: DC 8~23v
* Output voltage: DC 5V
* Output current: Max. 3A
* With overload/over-current protection
* With over/low voltage protection
* Stable performance.
It's charging a little basically old-school pocket organizer device called a Ben Nanonote. The Nanonote uses a Seaward Electronics SE9016 Standalone Linear Lithium Battery Charger Integrated Circuit. (their page) (datasheet). It has a USB 2.0 Mini port.
To charge do I need to do anything other than place a 200-ohm resistor between the 5v DC positive lead and the 5v positive wire of the USB cable?
Is there a way to test that the supply is charging within the USB spec (without an oscilloscope or other higher end stuff) before deployment?
Thanks for any help,
USB PICs and the UBW
2 posts • Page 1 of 1
Talking to some people elsewhere, so so far it sounds like it is safe to just try 5v on the P(ower)+ and P(ower)- lines, and then if the device doesn't charge try the 200-ohm resistor shorting the D(ata)+ and D(ata)- lines, and if that doesn't work look into the 4-resistor thing.