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BQ2057CDGKRG4

  • 描述:电池化学物质成份: 锂离子/聚合物 电池数量: one 最小电源电压: 15伏 供应商设备包装: 8-VSSOP 安装类别: 表面安装
  • 品牌: 德州仪器 (Texas)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 2500

数量 单价 合计
2500+ 15.43824 38595.60250
  • 库存: 0
  • 单价: ¥15.43824
  • 数量:
    - +
  • 总计: ¥38,595.60
在线询价

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规格参数

  • 部件状态 可供货
  • 电池化学物质成份 锂离子/聚合物
  • 电池数量 one
  • 安装类别 表面安装
  • 电流属性充电性能 常量-可编程
  • 可编程功能 当前的
  • 最大充电电流 -
  • 制造厂商 德州仪器 (Texas)
  • 连接口 -
  • 故障保护 -
  • 电池包电压值 4.2伏
  • 工作温度 -20摄氏度~70摄氏度(TA)
  • 包装/外壳 8-TSSOP, 8-MSOP (0.118", 3.00毫米 Width)
  • 最小电源电压 15伏
  • 供应商设备包装 8-VSSOP

BQ2057CDGKRG4 产品详情

The BENCHMARQ bq2057 series advanced Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.

The bq2057 continuously measures battery temperature using an external thermistor. For safety, the bq2057 inhibits charge until the battery temperature is within user-defined thresholds. The bq2057 then charges the battery in three phases: conditioning, constant current, and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the bq2057 precharges using a low current to condition the battery. The conditioning charge rate is approximately 10% of the regulation current. The conditioning current also minimizes heat dissipation in the external pass-element during the initial stage of the charge. After conditioning, the bq2057 applies a constant current to the battery. An external sense-resistor sets the current. The sense-resistor can be on either the high or low side of the battery without additional components. The constant-current phase continues until the battery reaches the charge-regulation voltage.

The bq2057 then begins the constant-voltage phase. The accuracy of the voltage regulation is better than ±1% over the operating-temperature and supply-voltage ranges. For single and dual cells, the bq2057 is offered in four fixed-voltage versions: 4.1 V, 4.2 V, 8.2 V, and 8.4 V. Charge stops when the current tapers to the charge termination threshold, I(TERM). The bq2057 automatically restarts the charge if the battery voltage falls below the V(RCH) threshold.

The designer also may use the AutoComp feature to reduce charging time. This proprietary technique allows safe and dynamic compensation for the internal impedance of the battery pack during charge.

Feature

  • Ideal for Single (4.1 V or 4.2 V) and Dual-Cell (8.2 V or 8.4 V) Li-Ion or Li-Pol Packs
  • Requires Small Number of External Components
  • 0.3 V Dropout Voltage for Minimizing Heat Dissipation
  • Better Than ±1% Voltage Regulation Accuracy With Preset Voltages
  • AutoComp Dynamic Compensation of Battery Pack’s Internal Impedance to Reduce Charge Time
  • Optional Cell-Temperature Monitoring Before and During Charge
  • Integrated Voltage and Current Regulation With Programmable Charge-Current and High-or Low-Side Current Sensing
  • Integrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage Of Charge
  • Charge Status Output for Single or Dual Led or Host Processor Interface
  • Automatic Battery-Recharge Feature
  • Charge Termination by Minimum Current
  • Automatic Low-Power Sleep Mode When VCC Is Removed
  • EVMs Available for Quick Evaluation
  • Packaging: 8-Pin SOIC, 8-Pin TSSOP, 8-Pin MSOP
BQ2057CDGKRG4所属分类:电池充电控制/管理芯片,BQ2057CDGKRG4 由 德州仪器 (Texas) 设计生产,可通过久芯网进行购买。BQ2057CDGKRG4价格参考¥15.438241,你可以下载 BQ2057CDGKRG4中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询BQ2057CDGKRG4规格参数、现货库存、封装信息等信息!

德州仪器 (Texas)

德州仪器 (Texas)

德州仪器公司(TI)是一家开发模拟IC和嵌入式处理器的全球半导体设计和制造公司。通过雇用世界上最聪明的人,TI创造了塑造技术未来的创新。如今,TI正在帮助超过10万名客户改变未来。

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