Battery Monitoring Circuits

ABLIC's S-8245A series is a protection IC for three-serial to five-serial cell lithium-ion rechargeable batteries, which includes high-accuracy voltage detection circuits and delay circuits. It is suitable for protecting three-serial to five-serial cell lithium-ion rechargeable battery packs from overcharge, over-discharge, and overcurrent.

Cascade connection using the S-8245A series realizes protection of six-serial or greater cell count lithium-ion rechargeable battery packs. Connecting an NTC will allow for temperature detection at four different points: high-temperature detection during charging, low-temperature detection during charging, high-temperature detection during discharging, and low-temperature detection during discharging.

Below is a circuit example showing how a cascade connection of the IC can be used to protect a six-serial or greater cell count lithium-ion rechargeable battery pack.