Li-ion protection in a 2x2 mm package
The Texas Instruments BQ24304DSGT is a dedicated Li-ion battery protection IC that monitors overcurrent, over-temperature, and over/under-voltage conditions on the cell. It integrates the protection FET and sense resistor in an 8-WSON (2x2) package, saving board area in space-constrained portable designs.
Fault coverage and thermal range
The protection block covers overcurrent, overtemperature, and over/under-voltage faults — the three failure modes that dominate Li-ion cell damage in single-cell portable gear. The operating junction temperature range spans 0°C to 125°C, which covers the interior of a charging device or battery pack under load, but not a freezing outdoor environment.
Package and footprint reality
The 0.50 mm pitch demands careful solder-paste stencil design; the small body means the pad is the only effective thermal path, so the board copper area sets the real power dissipation limit.
Obsolete — sourcing the BQ24304DSGT today
The BQ24304DSGT is listed as obsolete by Texas Instruments.