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参数资料
| 型号： | DS2786G-5+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/22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
DESCRIPTION
The DS2786 provides current-flow, voltage, and temperature measurement data to support battery-capacity
monitoring in cost-sensitive applications. Current is measured bidirectionally over a dynamic range of ±51.2mV with
a resolution of 25μV. Assuming a 15m ? sense resistor, the current sense range is ±3.4A, with a 1 LSB resolution
of 1.667mA. Current measurements are performed at regular intervals and accumulated with each measurement to
support “coulomb counting” during periods of host power consumption. Each current measurement is reported with
sign and magnitude in the two-byte Current Register. Battery voltage measurements are reported in the two-byte
Voltage Register with 12-bit (1.22mV) resolution, and auxiliary voltage measurements are reported in the two-byte
Aux Volt Registers with 11-bit resolution. Additionally, the Temperature Register reports temperature with 0.125oC
resolution and ±3oC accuracy from the on-chip sensor. The on-chip temperature measurement is optional and
replaces the auxiliary voltage channel AIN1.
The DS2786 provides accurate relative capacity measurements during periods of host system inactivity by looking
at cell open circuit voltage. Cell capacity is calculated using an OCV voltage profile and a 1-byte scale factor to
weight accumulated current during the coulomb-counting periods. The OCV voltage profile and scale factor are
stored in EEPROM memory. The EEPROM memory is constructed with a SRAM shadow so that the OCV voltage
profile and scale factor can be overwritten by the host to accommodate a variety of cell types and capacities from
2
Measurement Registers.
Figure 3. Application Example
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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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