The bq2920x 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 bq2920x 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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries datasheet (Rev. C) | PDF | HTML | 01 Mar 2016 |
| Technical article | Battery-charging tips for video doorbell applications | PDF | HTML | 15 Apr 2019 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
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