- 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：适用于高放电率 (>5A)、小电池组容量 (<2Ah) 的镍镉电池电量监测计
- 点击这里打开及下载BQ2011的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The bq2011 Gas Gauge IC is intended for battery-pack installation to maintain an accurate record of available battery charge. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. The bq2011 is designed for systems such as power tools with very high discharge rates.
Battery self-discharge is estimated based on an internal timer and temperature sensor. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and selfdischarge calculations to provide available charge information across a wide range of operating conditions. Initial battery capacity is set using the PFC and MODE pins. Actual battery capacity is automatically "learned" in the course of a discharge cycle from full to empty and may be displayed depending on the display mode.
Nominal available charge may be directly indicated using a five-segment LED display. These segments are used to indicate graphically the nominal available charge.
The bq2011 supports a simple single-line bidirectional serial link to an external processor (common ground). The bq2011 outputs battery information in response to external commands over the serial link. To support subassembly testing, the outputs may also be controlled by command. The external processor may also overwrite some of the bq2011 gas gauge data registers.
The bq2011 may operate directly from four cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC from a greater number of cells.
Internal registers include available charge, temperature, capacity, battery ID, and battery status.
- Conservative and repeatable measurement of available charge in rechargeable batteries
- Designed for portable equipment such as power tools with high discharge rates
- Designed for battery pack integration
- 120μA typical standby current (self-discharge estimation mode)
- Small size enables implementations in as little as ? square inch of PCB
- Direct drive of LEDs for capacity display
- Self-discharge compensation using internal temperature sensor
- Simple single-wire serial communications port for subassembly testing
- 16-pin narrow SOIC
- Cell chemistry
- NiCd
- Number of series cells
- 2-4 Cells
- Communication interface
- DQ
- Battery capacity (Min) (mAh)
- 800
- Battery capacity (Max) (mAh)
- 2000
- Implementation
- Pack
- External capacity indication
- LED
- Features
- Coulomb Counter
- Operating temperature range (C)
- 0 to 70
- Cell balancing
- —
BQ2011的完整型号有：BQ2011SN-D118、BQ2011SN-D118TR，以下是这些产品的关键参数及官网采购报价：
BQ2011SN-D118，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：40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BQ2011SN-D118的批量USD价格：12.516（1000+）
BQ2011SN-D118TR，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：2500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BQ2011SN-D118TR的批量USD价格：10.79（1000+）
BQ2011SN-D118，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：40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BQ2011SN-D118的批量USD价格：12.516（1000+）
BQ2011SN-D118TR，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：2500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BQ2011SN-D118TR的批量USD价格：10.79（1000+）
