BQ24190 BQ 24190USB Adapter BQ Charging IC

The BQ24190 BQ 24190USB Adapter BQ Charging IC are highly integrated switch-mode Li-Ion/Li-Pol charger ICs that offer intelligent battery management and multiple protection features for reliable system operation. These devices support dual pack negative thermistor monitoring, ensuring accurate temperature-based charging control for improved battery safety.

Each IC incorporates a charging safety timer, over-voltage, and over-current protection, providing comprehensive system reliability. The thermal regulation feature automatically reduces the charge current once the internal junction temperature exceeds 120°C (programmable), protecting both the charger and the battery under high-load conditions.

The BQ24190 BQ 24190USB Adapter BQ Charging IC STAT pin reports charge and fault status, while PG (Power Good) in the BQ24190 indicates the presence of a valid power input. The INT output allows the system host to immediately respond to fault events for advanced system monitoring.

These ICs come in a compact 24-pin 4.0 × 4.0 mm² thin VQFN package, suitable for space-limited portable and embedded designs.

Technical Summary:

• Supports single-cell Li-Ion / Li-Pol charging
• Dual pack NTC monitoring for safety
• Programmable thermal regulation (120°C default)
• Built-in safety timer and fault protection
• PG and STAT pins for system feedback
• INT output for immediate fault alerts
• Compact 24-pin 4.0 × 4.0 mm² VQFN package