BQ29419_TI 用于 2、3 或 4 节锂离子电池的电压保护

BQ29419的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：电池管理 IC - 电池保护器
功能描述：用于 2、3 或 4 节锂离子电池的电压保护
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BQ29419的产品详情：

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

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 bq2941x 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.

BQ29419的优势和特性：

2-, 3-, or 4-Cell Secondary Protection
Low Power Consumption ICC < 2 μA [VCELL(ALL) < V(PROTECT)]
Fixed High Accuracy Overvoltage Protection Threshold
- bq29410 = 4.35 V
- bq29411 = 4.40 V
- bq29412 = 4.45 V
- bq29413 = 4.50 V
- bq29414 = 4.55 V
- bq29415 = 4.60 V
- bq29419 = 4.30 V
Programmable Delay Time of Detection
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
APPLICATIONS
- 2nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
  - Notebook Computers
  - Portable Instrumentation
  - Portable Equipment

BQ29419的参数（英文）：

Function
Protection
Number of series cells (Min)
2, 3, 4
Number of series cells (Max)
3, 4
Features
Overvoltage, Single pin output drive
Typical operating current (Typ) (uA)
2
Rating
Catalog
Vin (Max) (V)
25

BQ29419具体的完整产品型号参数及价格（美元）：

BQ29419的完整型号有：BQ29419PW、BQ29419PWR，以下是这些产品的关键参数及官网采购报价：

BQ29419PW，工作温度：-40 to 110，封装：TSSOP (PW)-8，包装数量MPQ：150个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ29419PW的批量USD价格：1.065（1000+）

BQ29419PWR，工作温度：-40 to 110，封装：TSSOP (PW)-8，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ29419PWR的批量USD价格：.907（1000+）

BQ29419的评估套件：

BQ29419的电路图解：

BQ29419的评估套件：