AnsweredAssumed Answered

LTC3331 USB Vin

Question asked by alanhawse on Aug 12, 2018
Latest reply on Aug 13, 2018 by Zack

I was planning on using a solar cell on AC1/AC2.

 

And I was hoping to attach a USB connector to Vin... so I could also plug in the device... e.g. if it was brought inside.

 

 

Do I understand correctly that I need to limit the input current to 25mA into Vin if I do that?

 

Also if I attach 5V (via USB)... that would also mean that I need to set the UnderVoltage lockout window to be around 5V... which would effectively restrict which solar cells that I could use.

 

Unless I am missing something it doesnt look like the chip was intended to do what I am suggesting.

 

Did I read that correctly?

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