2x2 mm WSON — footprint and thermal story
The BQ296216DSGT: This is a dedicated Li-Ion battery protection IC, monitoring 2 to 4 series cells for over-voltage faults. The protection threshold is set internally — no external resistor divider for the trip point, which simplifies the BOM but locks the threshold to the factory trim.
Temperature grade and environment
Rated for -40°C to 110°C ambient (TA), this part covers the industrial temperature band with margin into the low end of automotive cabin environments. The 110°C ceiling is above the typical 85°C limit for consumer-grade protection ICs — relevant if the battery pack sits near a hot motor controller or inside a sealed enclosure with self-heating. RoHS3 compliant per, with no halogen or lead restrictions beyond the EU directive.