Describes

This IC is used for secondary protection of lithium-ion rechargeable batteries, and incorporates high-accuracy voltage detection circuits and delay circuits. The S-82K3B Series enable connection of 3-serial cell, and the S-82K4B Series enable connection of 4-serial cell.

This IC provides a wake-up function to prevent the fuse from blowing during battery connection, and allows the lithium battery to be connected in any order.

Since this IC also comes with a constant voltage output circuit capable of outputting 1.5 V to 3.3 V, it can be used as a constant-voltage power supply for an external RTC (Real-Time clock IC). 

Application

• Lithium-ion rechargeable battery packs (for secondary protection)