SLUSB15J September 2012 – May 2021 BQ2947
PRODUCTION DATA
The BQ2947 devices are a family of second-level protectors used for overvoltage protection of the battery pack in the application. The device, when configuring the OUT pin with active high, drives a NMOS FET that connects the fuse to ground in the event of a fault condition. This provides a shorted path to use the battery and/or charger power to blow the fuse and cut the power path. The OUT pin, when configured as active low, can be used to drive a PMOS FET to connect the fuse to ground instead.