Overvoltage Protection Device for 2- to 3-Cell Li-Ion Batteries, with 4.40v OVP

The BQ2945xy family of products is a

secondary-level voltage monitor and protector for Li-ion battery pack systems. Each cell is

monitored independently for an overvoltage condition. Based on the configuration, an output

is triggered after a fixed delay if any of the two or three cells has an overvoltage

condition. This output is triggered into a high state after an overvoltage condition

satisfies the specified delay timer.