hi team,
my customer want to use the Li-Ion Battery Pack Manager chip BQ40Z50 for our battery solution.
In our use case we discharge the battery with only a few µA current (typical 20…50 µA, max. 200 µA) for a longer time. While this time the BQ40Z50 shall be in Sleep Mode because the consumption in Normal Mode is too much for battery lifetime.
In the datasheet (chapter Supply Current) there are given two Sleep Modes, one with “DSG on” and one with “DSG off”. We cannot use the Sleep Mode with “DSG off” because our device must be powered always with minimum a few µA current. So we only can use the Sleep Mode with “DSG on”.
Is it possible to use the BQ40Z50 for this use case? We must be sure that the battery can be discharge with a so low current and the BQ40Z50 must not enter the Sleep Mode with “DSG off” in this case. How the chip differ between the two Sleep Modes? Is it possible to disable the Sleep Mode with “DSG off” so that only the Sleep Mode with “DSG on” is available?
regards,
Kamal
