What this part does in a battery pack
The Texas Instruments BQ296114DSGT is a dedicated battery protection IC for Lithium Ion packs with 2 to 4 series cells. Its sole protection function is over-voltage detection — it monitors each cell and triggers an external fault output when any cell exceeds the over-voltage threshold. There is no under-voltage lockout, over-current sense, or short-circuit detection on-chip; the BQ296114DSGT is a single-purpose monitor meant to sit alongside a separate charge-management controller or fuel gauge. The part is housed in an 8-WSON (2x2 mm) package with an exposed pad for thermal relief, surface-mount only. Operating temperature spans -40°C to 110°C, which covers industrial battery enclosures and outdoor telecom backup packs.
Cell-count fit and 3S compatibility
The BQ296114DSGT supports 2 to 4 series cells. A 3S (three-cell) Li-ion pack falls squarely within that range, so the part is electrically compatible with 3S configurations. The over-voltage threshold is factory-programmed for a specific chemistry; verify the exact threshold variant against your cell specification. The part does not adjust thresholds via external resistors — it is a fixed-trip device.
Active lifecycle — no LTB risk
The BQ296114DSGT is listed as Active with no end-of-life notice. It is RoHS3 compliant. For new designs or ongoing production, there is no last-time-buy pressure.
Sourcing and procurement
Cut Tape (CT) and Tape & Reel (TR) options are available for prototyping or production volumes.