Other Parts Discussed in Thread: BQ4050, BQ40Z50
We are evaluating two batteries for use in a medical device, where one uses the BQ28Z610 and the other uses the BQ4050. We have noticed that the BQ4050 provides a "Permanent Fail" mode for undervoltage (configurable threshold, defaulting to 2.2 V), but that the BQ28Z610 "Permanent Fail" mode does not include support for undervoltage. Is there something about the design of the BQ28Z610 which negates the need for an undervoltage "Permanent Fail" state (e.g., charge monitoring that will catch a failure before it is catastrophic), or should we be concerned with using the BQ28Z610 because it will not prevent recharging after a deep discharge? Thanks in advance.