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BQ2084-V143 状态: ACTIVE

SBS v1.1-Compliant Gas Gauge For Use With The bq29312

      
         
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 BQ2084-V143
Battery Capacity(Min)(mAh)500  
Battery Capacity(Max)(mAh)15000  
Communication InterfaceSMBus  
Capacity IndicationLED  
# Series Cells2,3,4  
Pin/Package36QFN, 38TSSOP  
Approx. Price (US$) 4.00 | 1ku  
 样片
 库存

产品信息

特性

  • Provides Accurate Measurement of Available Charge in Li-Ion and Li-Polymer Batteries
  • Supports the Smart Battery Specification (SBS) V1.1
  • Integrated Time Base Removes Need for External Crystal with Optional Crystal input
  • Works With the TI bq29312 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
  • Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
  • Integrated Flash Memory Eliminates the Need for External Configuration EEPROM
  • Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
  • Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
    • Better Than 0.65-nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1-µV
  • Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
  • Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
  • Available in a 38-Pin TSSOP (DBT) Package
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

说明

The bq2084-V143 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The bq2084-V143 monitors capacity and other critical parameters of the battery pack and reports the information to the system host controller over a serial communication bus. It is designed to work with the bq29312 AFE protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the bq2084-V143, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2084-V143 uses an integrating converter with continuous sampling for the measurement of battery charge and discharge currents. Optimized for coulomb counting in portable applications, the self-calibrating integrating converter has a resolution better than 0.65-nVh and an offset measurement error of less than 1-µV (typical). For voltage and temperature reporting, the bq2084-V143 uses a 16-bit A-to-D converter. With the bq29312, the onboard ADC also monitors the pack and individual cell voltages in a battery pack and allows the bq2084-V143 to generate the control signals necessary to implement the cell balancing and the required safety protection for Li-ion and Li-polymer battery chemistries.

The bq2084-V143 supports the Smart Battery Data (SBData) commands and charge-control functions. It communicates data using the System Management Bus (SMBus) 2-wire protocol. The data available include the battery's remaining capacity, temperature, voltage, current, and remaining run-time predictions.

The bq2084-V143 provides LED drivers and a pushbutton input to depict remaining battery capacity from full to empty in 20%, 25%, or 33% increments with a 3-, 4-, or 5-segment display.

The bq2084-V143 contains 1k bytes of internal data flash memory, which store configuration information. The information includes nominal capacity and voltage, self-discharge rate, rate compensation factors, and other programmable cell-modeling factors used to accurately adjust remaining capacity for use-conditions based on time, rate, and temperature. The bq2084-V143 also automatically calibrates or learns the true battery capacity in the course of a discharge cycle from programmable near full to near empty levels.

The bq29312 analog front-end (AFE) protection IC is used to maximize functionality and safety and minimize component count and cost in smart battery circuits. The bq29312 AFE protection IC provides power to the bq2084-V143 from a 2-, 3-, or 4-series Li-ion cell stack, eliminating the need for an external regulator circuit.

    

定价/封装/CAD 设计工具/样片

价格（美元）封装CAD 设计工具样片
器件状态价格（美元） | Quantity封装 | 引脚顶端标记封装数量 | 封装载体符号尺寸样片
BQ2084DBT-V143ACTIVE4.40 | 1kuTSSOP (DBT) | 38 查看 50 | TUBE 下载此符号的 CAD 格式 下载此尺寸的 CAD 格式采购样片
BQ2084DBT-V143G4ACTIVE4.40 | 1kuTSSOP (DBT) | 38 查看 50 | TUBE 下载此符号的 CAD 格式 下载此尺寸的 CAD 格式采购样片
BQ2084DBTR-V143ACTIVE4.00 | 1kuTSSOP (DBT) | 38 查看 2000 | LARGE T&R 下载此符号的 CAD 格式 下载此尺寸的 CAD 格式请与TI分销商或销售办事处联系申请样片
BQ2084DBTR-V143G4ACTIVE4.00 | 1kuTSSOP (DBT) | 38 查看 2000 | LARGE T&R 下载此符号的 CAD 格式 下载此尺寸的 CAD 格式请与TI分销商或销售办事处联系申请样片

建议零售价格仅用于预算，以美元为单位，并且价格是浮动的。 若要查询有关批量价格、本地货币价格或交付报价的信息，请与当地德州仪器 (TI) 销售办事处或授权经销商联系。

库存

  TI 库存状态 已报告的分销商库存
BQ2084DBT-V143截至 6:56 PM GMT, 2009年 7月 3日截至 6:56 PM GMT, 2009年 7月 3日
 交货周期地区公司库存采购
 16 Weeks无报告
查看经销商		   
BQ2084DBT-V143G4截至 6:56 PM GMT, 2009年 7月 3日截至 6:56 PM GMT, 2009年 7月 3日
 交货周期地区公司库存采购
 16 Weeks无报告
查看经销商		   
BQ2084DBTR-V143截至 6:56 PM GMT, 2009年 7月 3日截至 6:56 PM GMT, 2009年 7月 3日
 交货周期地区公司库存采购
 20 Weeks 中国WPI >1k
BQ2084DBTR-V143G4截至 6:56 PM GMT, 2009年 7月 3日截至 6:56 PM GMT, 2009年 7月 3日
 交货周期地区公司库存采购
 20 Weeks无报告
查看经销商		   

查看中国经销商

**目前尚无法提供交货时间信息。 但是，由于我们的信息每天都会更新，如有疑问，请马上与我们联系。 有关附加信息，请与首选的 TI 授权分销商 联系。

质量与无铅数据

 产品目录DPPM / MTBF / FIT 率
器件环保计划* 铅/焊球涂层MSL 等级/回流焊峰详细信息详细信息
BQ2084DBT-V143 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看
BQ2084DBT-V143G4 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看
BQ2084DBTR-V143 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看
BQ2084DBTR-V143G4 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看

* 计划的环保分级：无铅 (RoHS)、无铅（RoHS 豁免）或绿色环保（RoHS 和无 Sb/Br）- 请单击上表中产品目录明细的“查看”链接，以获得最新供货信息和附加产品目录明细。

如果此时没有在线提供您所请求的信息，则请联系 我们的产品信息中心， 以了解关于此信息可用性的信息。

技术文档

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