- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：电池管理 IC - 电池电量监测
- 功能描述：用于嵌入式便携式应用中电池容量监测、具有成本效益的库仑计数器
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The bq26231 is a low-cost charge/discharge counter peripheral in an 8-pin TSSOP. It works with an intelligent host controller, providing state-of-charge information for rechargeable Li-Ion, Li-Pol, or NiMH batteries. The bq26231 measures the voltage drop across a low-value series sense resistor between the negative terminal of the battery and the battery pack ground contact. By using the accumulated counts in the charge, discharge, and self-discharge registers, an intelligent host controller can determine battery state-of-charge information. To improve accuracy, an offset count register is available. The system host controller is responsible for the register maintenance by resetting the charge in/out and self-discharge registers as needed.
The bq26231 features 13 bytes of registers, which contain the capacity monitoring and status information. The RBI input operates from an external power storage source such as a capacitor or a series cell in the battery pack, providing register nonvolatility for periods when the battery is shorted to ground or when the battery charge state is not sufficient to operate the bq26231. During this mode, the register backup current is less than 100 nA. Packaged in an 8-pin TSSOP, the bq26231 is small enough to fit in the crevice between two A-size cells or within the width of a prismatic cell.
- Multifunction High-Accuracy Coulometric Charge and Discharge Counter
- Ideal for Portable Applications With Nonremovable Rechargeable Battery Pack
- Resolves Signals Less Than 12.5 uV
- Internal Offset Calibration Improves Accuracy
- 128 Bytes of General-Purpose RAM
- Internal Temperature Sensor Eliminates the Need for an External Thermistor
- High-Accuracy Internal Timebase Eliminates External Crystal Oscillator
- Low Power Consumption:
- Operating: < 80 uA
- Sleep: < 10 uA
- Single-Wire HDQ Serial Interface
- Packaging: 8-Lead TSSOP
- Cell chemistry
- Lead Acid, Li-Ion/Li-Polymer, NiCd, NiMH
- Number of series cells
- Single Cell
- Communication interface
- HDQ
- Implementation
- Pack, System
- External capacity indication
- None
- Features
- Coulomb Counter
- Operating temperature range (C)
- -20 to 70
- Cell balancing
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BQ26231的完整型号有：BQ26231PW、BQ26231PWR，以下是这些产品的关键参数及官网采购报价：
BQ26231PW，工作温度：-20 to 70，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BQ26231PW的批量USD价格：5.096（1000+）
BQ26231PWR，工作温度：-20 to 70，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BQ26231PWR的批量USD价格：4.416（1000+）
BQ26231PW，工作温度：-20 to 70，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BQ26231PW的批量USD价格：5.096（1000+）
BQ26231PWR，工作温度：-20 to 70，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BQ26231PWR的批量USD价格：4.416（1000+）
