可提供此产品的更新版本
功能与比较器件相同但引脚有所不同
BQ2018
- Multifunction charge/discharge counter
- Resolves signals less than 12.5uV
- Internal offset calibration improves accuracy
- 1024 bits of NVRAM configured as 128 x 8
- Internal temperature sensor for self-discharge estimation
- Single-wire serial interface
- Dual operating modes:
- Operating: <80uA
- Sleep: <10uA - REG output for low-cost microregulation
- Internal timebase eliminates external components
- 8-pin TSSOP or SOIC allows battery pack integration
The bq2018 is a low-cost charge/discharge counter peripheral packaged in an 8-pin TSSOP or SOIC. It works with an intelligent host controller, providing state-of-charge information for rechargeable batteries.
The bq2018 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 bq2018 also features 128 bytes of NVRAM registers. The upper 13 bytes of NVRAM 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 bq2018. During this mode, the register backup current is less than 100nA.
Packaged in an 8-pin TSSOP or SOIC, the bq2018 is small enough to fit in the crevice between two A-size cells or within the width of a prismatic cell.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Power Minder | 1999年 9月 5日 | |||
应用手册 | Gas Gauging Basics Using TI Battery Monitor ICs (Rev. A) | 2003年 10月 17日 | ||||
应用手册 | Advanced Gas Gauge Firmware Flowchart for TI Battery Monitor ICs | 2002年 8月 28日 | ||||
应用手册 | Advanced Gas Gauge Host Firmware for TI Battery Monitor ICs | 2001年 5月 16日 | ||||
应用手册 | HDQ Communication Basics for TI Battery Monitor ICs | 2001年 5月 16日 | ||||
用户指南 | bq2018 EVM | 2000年 4月 10日 | ||||
用户指南 | bq2018 Power Minder | 2000年 4月 10日 | ||||
用户指南 | DM2382 Gas Gauge Peripheral and Li-Ion Pack Protection Demo Board | 1999年 9月 5日 | ||||
应用手册 | Designed to Go: Universal Battery Monitor Using the bq2018 Power Minder IC | 1999年 9月 5日 | ||||
用户指南 | EV2200-18 Evaluation System User Guide | 1999年 9月 5日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
封装 | 引脚 | 下载 |
---|---|---|
SOIC (D) | 8 | 查看选项 |
TSSOP (PW) | 8 | 查看选项 |
订购和质量
- 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
- 制造厂地点
- 封装厂地点