Hi,
We are selecting a supercapacitor for backup supply for the RTC.To do so we need the maximum current rating on Backup supply voltage. Can we considered 1.5uA as the maximum rating? The below is from the datasheet.
In order for the bq32000 to achieve a low backup supply current as specified in the Electrical Characteristics, the VCC pin must be initialized after every total power loss situation. Initialization Is achieved by powering on VCC with a voltage between 3 to 3.6 V for at least 1 ms immediately after the backup supply is connected. If the VCC is not powered on while connecting the backup supply, then the expected leakage current from VBACK will be much greater than specified. So we can only assume it to be 1.5 uA or would it be higher than this?, how much high not specified .
