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参数资料
| 型号： | DS2790E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 31/41页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE BATT 28TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 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： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
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DS2790 Programmable 1-Cell Li-Ion Fuel Gauge and Protector
Figure 11. Current Register Format
12-bit + sign resolution (13-bit), 88ms update interval
Word Address 6004h
S
2 11 2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
X
X
X
Units: 2 = 15.625 μ V/R sns
MSb
“S”: sign bit(s)
Figure 12. Average Current Register Format
15-bit + sign resolution (16-bit), 2.8s update interval
Word Address 6009h
0
LSb
S
2 14 2 13 2 12 2 11 2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Units: 2 = 1.953 μ V/R SNS
MSb
“S”: sign bit(s)
0
LSb
Current Offset Correction
Continuous offset cancellation is performed automatically to correct for offsets in the current measurement system.
Individual values reported by the Current register have a maximum offset of ±0.5 bits (±7.8125μV). Individual
values reported in the Average Current register have a maximum offset of ±4 bits (±7.8125μV).
Current Accumulation
The DS2790 measures current for coulomb-counting purposes, with an accuracy of ±2% ±3.9μV over a range of
±64mV. Using a 15m ? sense resistor, current accumulation is performed over a range of ±4.26A while measuring
standby currents with an accuracy of ±195μA. Current measurements are internally summed, or accumulated, with
the results displayed in the Accumulated Current Register (ACR). The accuracy of the ACR is dependent on both
the current measurement and the accumulation timebase. The 16-bit ACR has a range of ±204.8mVh with a
resolution of 6.25μVh. Accumulation of charge current above the maximum register value is reported at the
maximum value; conversely, accumulation of discharge current below the minimum register value is reported at the
minimum value. Read and write access is allowed to the ACR.
Figure 13. Accumulated Current Register Format
Word Address 6006h
S
2 14 2 13 2 12 2 11 2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Units: 2 = 6.25 μ Vh/R SNS
MSb
“S”: sign bit(s)
0
LSb
The lower 32 bits of ACR resolution (bits 2 -1 to 2 -32 ) can be read by firmware from address locations 6007h and
6008h respectively. Note that since the lower bits are from separate address words it cannot be guaranteed that
they will contain data from the same measurement as the main ACR register at the time of reading. However, two
consecutive reads from addresses 6006h–6008h that contain the same data esures that all data is from the same
measurement. When the ACR register is written, the lower ACR bits are automatically cleared.
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相关代理商/技术参数 |
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|---|---|
| DS2790E+ | 功能描述:IC FUEL GAUGE BATT 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| DS2790E+T&R | 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE BATT 28TSSOP |
| DS2790E+T&R | 功能描述:IC FUEL GAUGE BATT 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| DS2790G | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable 1-Cell Li-Ion Fuel Gauge and Protector |
| DS2790G+ | 功能描述:IC FUEL GAUGE BATT 28-TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
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