The system I am designing has an AC input only. It will never be battery powered. Can I leave input pins ACIN, BAT1 and BAT2 unconnected? I am connecting VINPP to VIN. Can the ACOK pin be tied to VLDO3V through a pull up? I am not using an embedded controller so can I leave ECVCC unconnected. Also I do not have a power button. Will the PMIC still work without one? Also I am not using the temperature comparator. Can I leave the COMP pin unconnected or should I tie it to ground?