bq29209-Q1 Description
The BQ29209-Q1 device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction. The voltage of each cell in a 2-series cell battery pack is pared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low...
bq29209-Q1 Key Features
- 1 2-series cell secondary protection
- Automatic cell imbalance correction with external
- ±30-mV enable, 0-mV disable thresholds
- External capacitor-controlled delay timer
- External resistor-controlled cell balance current
- Low power consumption ICC < 3 µA typical
- Internal cell balancing handles current
- External cell balancing mode supported
- High-accuracy overvoltage protection
- ±25 mV with TA = 0°C to 60°C
bq29209-Q1 Applications
- 2nd level protection in li-ion battery packs