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Each cell in the battery pack is monitored for an over−voltage and under−voltage condition.
Upon detecting an over−voltage, the ODI pin will assert indicating a fault condition and stay asserted until the fault is cleared. During an under voltage condition, the UDI pin will also assert indicating the fault but will have a pulse width that is
pre−set in the protector. Both over and under voltage detections have a hard coded pre−set delay time before fault indication.
Pulling the ENB high will start a measurement of the battery pack voltage which will be compared to a pre−set detection threshold table.
If a threshold voltage is exceeded the protector will power the corresponding LED to indicate state of charge of the pack.
Hardware protection and battery monitoring run autonomously and allows operation without a microcontroller.