BQ2970
Overview
The BQ2970 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 BQ2970 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.
- Input voltage range pack+: VSS - 0.3 V to 12 V
- FET drive: - CHG and DSG FET drive output
- Voltage sensing across external FETs for overcurrent protection (OCP) is within ±5 mV (typical)
- Fault detection - 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 - NORMAL mode ICC = 4 µA - Shutdown Iq = 100 nA
- Operating temperature range TA = -40°C to +85°C
- Package: - 6-pin DSE (1.50 mm × 1.50 mm × 0.75 mm) PACK +
