BQ29401
- 2-, 3-, or 4-Cell Secondary Protection
- Low Power Consumption ICC < 2 µA [VCELL(ALL) <V(PROTECT)]
- High Accuracy Over Sense Voltage:
- bq29400: 4.35 V ±25 mV
- bq29400A: 4.40 V ±25 mV
- bq29401: 4.45 V ±25 mV
- bq29405: 4.65 V ±25 mV
- Prefixed Protection Threshold Voltage
- Programmable Delay Time
- High Power Supply Ripple Rejection
- Stable During Pulse Charge Operation
- APPLICATIONS
- 2nd Level Protection in Lion Battery Packs in
- Notebook PCs
- Portable Instrumentation
- Medical and Test Equipment
- 2nd Level Protection in Lion Battery Packs in
The bq29400, bq29400A, bq29401, and bq29405 are BiCMOS secondary protection ICs for 2-, 3-, or 4-cell Lithium-Ion battery packs that incorporate a high-accuracy precision over voltage detection circuit. They include a programmable delay circuit for over voltage detection time.
Each cell in a multiple cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2940x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.
技術文件
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檢視所有 1 類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Voltage Protection for 2-,3-or,4-Cell Lion Batteries datasheet (Rev. C) | 2005年 9月 26日 |
訂購與品質
內含資訊:
- 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
內含資訊:
- 晶圓廠位置
- 組裝地點