产品详情

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 Rating Catalog
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 Rating Catalog
SOIC (D) 16 59.4 mm² 9.9 x 6
  • 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 ½ 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

  • 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 ½ 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

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.

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.

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类型 标题 下载最新的英语版本 日期
* 数据表 Gas Gauge IC for High Discharge Rates 数据表 (Rev. A) 2003年 2月 11日
用户指南 EV2011 Gas Gauge Evaluation Board 1999年 9月 5日
用户指南 EV2011 bq2011 Evaluation System Product Brief 1999年 9月 5日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 16 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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