BQ2947
- 2-, 3-, and 4-series cell overvoltage protection
- External capacitor-programmed delay timer
- Factory programmed OVP threshold (threshold range 3.85V to 4.6V)
- Output options: active high or open drain active low
- High-accuracy overvoltage protection: ±10mV
- Low power consumption ICC ≈ 1µA (VCELL(ALL) < VPROTECT)
- Low leakage current per cell input < 100nA
- Small package footprint
- 8-pin WSON (2.00mm × 2.00mm)
The BQ2947 family is an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition.
In the BQ2947 device, an external delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into the active state (either high or low, depending on the configuration). The external delay timer feature also includes the ability to detect an open or shorted delay capacitor on the CD pin, which similarly triggers the output driver in an overvoltage condition.
For quicker production-line testing, the BQ2947 device provides a customer test mode with 67 reduced delay time.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | BQ2947 Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries With External Delay Capacitor datasheet (Rev. K) | PDF | HTML | 2026/6/5 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
訂購與品質
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