BQ29400
- 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.
技术文档
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查看全部 1 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Voltage Protection for 2-,3-or,4-Cell Lion Batteries 数据表 (Rev. C) | 2005年 9月 26日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
封装 | 引脚 | 下载 |
---|---|---|
SSOP (DCT) | 8 | 查看选项 |
TSSOP (PW) | 8 | 查看选项 |
订购和质量
包含信息:
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
包含信息:
- 制造厂地点
- 封装厂地点
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