FAQ: L6924U - how to connect IUSB pin in AC mode

Document created by Central Support Employee on Jun 25, 2018
Version 1Show Document
  • View in full screen mode
We are considering to use L6924U for a new design for a battery charging circuit in our industrial wireless remote controller project.
If we set up L6924U for AC input (MODE grounded), do we need to do anything with IUSB pin? Can we just ground it (w or w/o resistor) or leave it floating or tie it to IAC pin?
In case of exclusive AC Mode set-up, we recommend to leave IUSB pin floating , i.e. no connection to GND, no resistor, no short to IAC.
(extracted from ST Online Support)