Hello team,
Customer is using TPS62840 in a design with two lithium coin cells in series (CR2450X). Although the nominal voltage is 3V, battery vendor is saying that the absolute maximum voltage (OCV at 85C) is 3.4V, so 6.8V total. This would be between recommended VIN and Abs max VIN for TPS62840. Given this 6.8V condition will be fairly rare, and confined to the beginning of this device's life cycle, should we have a concern here? Do you have information on exactly how much of a reliability impact that could have?
Thanks!