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Original question:

BQ25601: questions on HIZ mode

BQ25600D: HiZ mode using an external signal

Lindsey Fike
Intellectual 2250 points
Part Number: BQ25600D


Customer Question- 

We have a housekeeping IC that can perform a hard reset.  This IC currently outputs an active-high RESET signal for 1 second.  When this signal is high, we expect all power sources to cut power to the system.  When this signal goes high, I would like the BQ25600D to enter HiZ mode so that the USB power path stops supplying power to the system.  

Is there a way to force the BQ25600D into HiZ mode using an external signal?  We could add a loadswitch on VBUS.  We could even just short REGN to GND.  But i am curious if this PMIC supports any more elegant solutions.

Thanks!