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德州仪器(TI)bq27621-G1是一款易于配置的微控制器外设,此外设提供针对单节锂离子电池的系统侧电器计量。此器件要求最小用户配置和系统微控制器固件开发。
bq27621-G1使用动态电压关联算法实现电量计量。这一过程在计算剩余电量(mAh),充电状态( %),电池电压(mV)和温度(°C)时无需感测电阻器。
使用bq27621-G1进行电池电量计量只需将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引脚,1.62mm x 1.58mm,0.5mm焊球间距YZF封装非常适合于空间受限应用。
典型应用
所有传统emarks是其各自所有者的财产。
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 |
BQ27621-G1 | BQ27220 | BQ27426 | BQ27520-G4 | BQ27542-G1 | BQ35100 |
---|---|---|---|---|---|
Single Cell | Single Cell | Single Cell | Single Cell | Single Cell | 2-4 Cells >4 Cells Single Cell |
Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Primary Lithium |
32000 | 29000 | 14000 | 32000 | 32000 | 32000 |
I2C | I2C | I2C | I2C | HDQ I2C | I2C |
100 | 100 | 100 | 100 | 100 | 100 |
None | None | None | None | None | None |
System | Pack System | System | System | Pack | Pack System |
Dynamic Voltage Correlation | CEDV | Impedance Track | Impedance Track | Impedance Track | Primary |
N/A | N/A | N/A | N/A | N/A | N/A |
No Sense Resistor Required | N/A | N/A | N/A | SHA-1 Authentication | End of Service |
-40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
9DSBGA | 9DSBGA | 9DSBGA | 15DSBGA | 12SON | 14TSSOP |