The BM3051 is a secondary protection IC for
rechargeable battery pack, it is highly integrated,
high accuracy, and low power consumption. By
monitor each cell’s voltage, IC provide protection
when the batteries are changing. If any of V1, V2
V3, V4 and V5 is higher than VOVP and lasts
longer than TOVP, the output voltage of CO will
become high level from low level, the control
MOSFET will be open and the fuse will be
browned.
2~5 cell battery pack can be protected by
single chip, and multiple chips cascade provide
protection for 6–cell or more than 6–cell batteries.