BQ29209
- 2-Series Cell Secondary Protection
- Automatic Cell Imbalance Correction with External
Enable Control- ±30-mV Enable, 0-mV Disable Thresholds
Typical
- ±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
(VCELL(ALL) < VPROTECT) - Internal Cell Balancing Handles Current
up to 15 mA - External Cell Balancing Mode Supported
- High-Accuracy Overvoltage Protection:
- ±25 mV with TA = 0°C to 60°C
- Fixed Overvoltage Protection Thresholds:
4.30 V, 4.35 V - Small 8L DRB Package
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries datasheet (Rev. C) | PDF | HTML | 2016年 3月 1日 |
| Technical article | Battery-charging tips for video doorbell applications | PDF | HTML | 2019年 4月 15日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。