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德州仪器(TI)bq27421-G1电量计是一款可轻松配置的微控制器外设,可针对单节锂离子电池提供系统端电量计量。此器件对用户配置和系统微控制器固件开发的要求极低。
此款电量计采用针对电量计量,已获专利的Impedance Track™算法,可提供诸如剩余电池容量(mAh),充电状态(%)和电池电压(mV)等信息。
通过bq27421-G1电量计进行电池电量监测只需将PACK +(P +)与PACK-(P- )连接至可拆卸电池组或嵌入式电池电路。微型9球,1.62mm×1.58mm尺寸,0.5mm间距的NanoFree芯片级封装(DSBGA)是空间受限类应用的理想选择。
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Number of Series Cells |
Cell Chemistry |
Battery Capacity (Max) (mAh) |
Communication Interface |
Battery Capacity (Min) (mAh) |
External Capacity Indication |
Implementation |
Gas Gauge Algorithm |
Cell Balancing |
Features |
Operating Temperature Range (C) |
Pin/Package |
BQ27421-G1 | BQ27425-G2A | BQ27425-G2B |
---|---|---|
Single Cell | Single Cell | Single Cell |
Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
8000 | 4000 | 4000 |
I2C | I2C | I2C |
100 | 100 | 100 |
None | None | None |
System | System | System |
Impedance Track | Impedance Track | Impedance Track |
N/A | N/A | N/A |
Integrated Sense Resistor | N/A | N/A |
-40 to 85 | -40 to 85 | -40 to 85 |
9DSBGA | 15DSBGA | 15DSBGA |