OVERVOLTAGE mode is detected if any of the cell voltages exceed the overvoltage threshold, V_OV, for a configured OV delay time. The OUT pin is activated after a delay time preprogrammed at the factory. The OUT pin will pull high internally. Then an external FET is turned on, shorting the fuse to ground, which allows the battery and/or charger power to blow the fuse. When all of the cell voltages fall below (V_OV – V_HYS), the device returns to NORMAL mode. The regulated output (if enabled) remains on in this mode.