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USB Charger detect

Question asked by dav on Sep 10, 2010
Latest reply on Sep 30, 2010 by matchaze



Any things to consider when designing an usb-charger detection circuit or using an IC like the FAN3988.


Normally D+ and D- are shorted on the charger-side. So the fairchild ic looks like a simple solution.


Don't really get the red-box (in the datasheet) though saying

Std 15K pull-down on D- input by USB device and 1.5K pull-up on D+ by USB transceiver.


Is that true for the 52x series?