0
ACTIVE
Rating |
Automotive |
Number of series cells (max) |
2 |
Number of series cells (min) |
2 |
Features |
Cell balancing, External delay capacitor, Overvoltage, Single pin output drive |
Function |
Protection |
Operating current (typ) (µA) |
3 |
Vin (max) (V) |
16 |
TI functional safety category |
Functional Safety-Capable |
Overvoltage protection |
4.3 |
Operating temperature range (°C) |
-40 to 105 |
Battery overvoltage protection (min) (V) |
4.3 |
Battery overvoltage protection (max) (V) |
4.3 |
VSON (DRB)-8-9 mm² 3 x 3
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 compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.
The BQ29209-Q1 can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by the CB_EN pin.
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