The bq2947 family is an overvoltage monitor and protector for Li-Ion battery pack
systems. Each cell is monitored independently for an overvoltage condition.
In the bq2947 device, an external delay timer is initiated upon detection of an
overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into
its active state (either high or low, depending on the configuration). The external delay timer
feature also includes the ability to detect an open or shorted delay capacitor on the CD pin, which
will similarly trigger the output driver in an overvoltage condition.
For quicker production-line testing, the bq2947 device provides a Customer Test Mode with
reduced delay time.
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