The bq297xy battery cell protection device provides an accurate monitor and trigger threshold for overcurrent protection during high discharge/charge current operation or battery overcharge conditions.
The bq297xy device provides the protection functions for Li-Ion/Li-Polymer cells, and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with low current consumption in NORMAL mode operation.
Input Voltage Range Pack+: VSS – 0.3 V to 12 V
CHG and DSG FET Drive Output
Voltage Sensing Across External FETs for Overcurrent Protection (OCP) Is Within ± 5 mV (Typical)
Overcharge Detection (OVP)
Over-Discharge Detection (UVP)
Charge Overcurrent Detection (OCC)
Discharge Overcurrent Detection (OCD)
Load Short-Circuit Detection (SCP)
Zero Voltage Charging for Depleted Battery
Factory Programmed Fault Protection Thresholds
Fault Detection Voltage Thresholds
Fault Trigger Timers
Fault Recovery Timers
Modes of Operation Without Battery Charger Enabled