All trademarks are the property of their respective owners.
DescriptionThe BQ29209TDRBRQ1 deviceis a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs thatincorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalancecorrection.
The voltage of each cell in a 2-series cell battery pack is compared to a factoryprogrammed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pinchanges from low to high state.
The BQ29209TDRBRQ1 canperform automatic voltage-based cell imbalance correction. Balancing can start when the cellvoltages are different by nominally 30mV or more and stops when the difference isnominally 0 mV. Cell balancing is enabled and disabled by the CB_ENpin.
Feature
- 2-series cell secondaryprotection
- Automatic cell imbalance correction with external enablecontrol
- ±30-mV enable, 0-mV disable thresholdstypical
- External capacitor-controlled delaytimer
- External resistor-controlled cell balance current
- Lowpower consumption ICC < 3 μA typical (VCELL(ALL)< VPROTECT)
- Internal cell balancing handlescurrentup to 15mA
- External cell balancing modesupported
- High-accuracy overvoltage protection:
- ±25 mVwith TA = 0°C to 60°C
- Fixedovervoltage protection threshold:4.30 V
- Small8L DRB package
- Automotive-qualified AEC Q100 grade two
All trademarks are the property of their respective owners.
DescriptionThe BQ29209-Q1 deviceis a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs thatincorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalancecorrection.
The voltage of each cell in a 2-series cell battery pack is compared to a factoryprogrammed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pinchanges from low to high state.
The BQ29209-Q1 canperform automatic voltage-based cell imbalance correction. Balancing can start when the cellvoltages are different by nominally 30mV or more and stops when the difference isnominally 0 mV. Cell balancing is enabled and disabled by the CB_ENpin.
