- 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:针对 2 节、3 节或 4 节锂离子和锂聚合物电池的 2 级过压保护(第 2 级保护)
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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.
- 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
- 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)
- 25.3
BQ29400的完整型号有:BQ29400DCT3、BQ29400PW,以下是这些产品的关键参数及官网采购报价:
BQ29400DCT3,工作温度:PropertyValue,封装:SM8 (DCT)-8,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNBI,TI官网BQ29400DCT3的批量USD价格:0.907(1000+)
BQ29400PW,工作温度:-25 to 85,封装:TSSOP (PW)-8,包装数量MPQ:150个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网BQ29400PW的批量USD价格:1.105(1000+)
BQ29400DCT3,工作温度:PropertyValue,封装:SM8 (DCT)-8,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNBI,TI官网BQ29400DCT3的批量USD价格:0.907(1000+)
BQ29400PW,工作温度:-25 to 85,封装:TSSOP (PW)-8,包装数量MPQ:150个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网BQ29400PW的批量USD价格:1.105(1000+)