milvapp
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I have no idea what a PV panel is.
From what I know devices that have a USB plug have internal charging circuit so what is the external charger you describe, did you make it?
You insist on the charger getting supply from the device it is intended to charge, I don't know why you insist on that.
The LTI chip..."The part can directly detect the impedance on the ID pin of a micro-AB receptacle to automatically tell the internal bidirectional switching regulator to provide a 5V output on VBUS for USB On-The-Go."
Why to you want to use the mobile as a power source instead of using an external rechargable battery?
It doesn't seem a well-thought out idea, to somehow rely on charge from a device that could potentially be totally discharged, in order to charge that device(!?!) Maybe I'm wrong..
You can see from the answers how people are interpreting your question - if this is incorrect, I think the "lost in translation" issue is at your end, and you need to find an alternate way to describe your problem (hint: a diagram may be better since in so many posts your requirement is still as clear as mud : (
@SunnySkyguy Thank you.You substantially helped me
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@tpetar thank you for the recommendation.
I know that the 5mA getting from my PV panel is an issue,
however it should fit along with mobile or wearable devices.
That was a factor for choosing a PV panel like this SANYO - AM-5913CAR-SCE.
I find the PV LED garden lights do not hold a candle up to telephone wire and an external source of power. I can make my LEDs just as bright with 1.5mA, but I tend to run then around 150mAusing laptop chargers to run strings of 6x1W then 13 to 20 strings all in parallel. ! but I run the well below max power levels. so there is plenty of stability margin and they run cool.
Although it is possible to use the LEDs as photo sensors when off.
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