ZHCSJD3B July 2018 – February 2019 BQ25150
When VIN is present and VDD is powered from VIN, the ADC is constantly active, performing conversions continuously. The device will not send an interrupt after a conversion is complete since this would force the device to constantly send ADC_READY interrupts that would overwhelm the host. The host will be able to read the ADC results registers at any time. This is true even when VIN > VOVP.