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参数资料
| 型号： | DS2786G-5+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/22页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE OCV-BASED 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x4） |
| 包装： | 带卷 (TR) |
DS2786 Stand-Alone OCV-Based Fuel Gauge
OCV DETECTION AND CURRENT BLANKING
The Blanking/OCV Threshold Register sets the current measurement level at which the DS2786 switches between
coulomb counting and open-circuit voltage measurement. When the magnitude of the measured current (after
COBR is applied) is less than the value defined by the Blanking/OCV Threshold Register, the measurement is not
summed into the IACR. Instead, the IACR is maintained at its present value and the DS2786 begins dV/dt
measurement evaluation to detect an OCV voltage condition. A threshold value that is below the minimum
operational current, but above the maximum idle current of the application should be selected. The Blanking/OCV
Threshold Register has a resolution of 25 ? V/R SNS , and a range from 0mV/R SNS to 6.375mV/R SNS . The factory
default value is 06h
Figure 13. Blanking/OCV Threshold Register Format
Address 7Bh
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
MSb
LSb
Units: 25 ? V/R SNS
While the measured current is below the Blanking/OCV Threshold level, the DS2786 actively searches for a
relaxed cell by calculating the change in cell voltage as reported in the Voltage Register over 15 minute intervals
(dV/dt). If the 15 minute dV/dt change of the Voltage Register is less than the value stored in the OCV dV/dt
Threshold Register, the DS2786 determines that the cell is now in a relaxed state and the Relative Capacity
Register is adjusted based on the OCV cell model stored in parameter EEPROM. This operation will occur
repeatedly every 15 minutes until the DS2786 returns to coulomb-counting mode of operation.
The OCV dV/dt Threshold Register has a resolution of 1.22mV/15min and a range from 0mV/15min to
18.3mV/15min. The factory default value is 3.66mV/15min. Note that the upper 4 bits of the OCV dV/dt Threshold
Register are used to EEPROM back bits from the Status/Configuration Register.
Figure 14. OCV dV/dt Threshold Register Format
Address 7Ch
SMOD LDIS VODIS ITEMP
2 3
2 2
2 1
2 0
MSb
12 of 22
LSb
Units: 1.22mV/15min
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2786K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2786K-SMP | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2788 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel-Gauge IC with LED Display Drivers |
| DS2788_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel-Gauge IC with LED Display Drivers |
| DS2788E+ | 功能描述:电池管理 Stand-Alone F-Gauge w/LED Display Drvrs RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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