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参数资料
| 型号： | DS2782E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE BATT 8TSSOP |
| 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）、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： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1436 (CN2011-ZH PDF) |
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DS2782
applications, Standby Empty represents the point that the battery can no longer support RAM refresh and thus the
standby voltage is set by the RAM voltage supply requirements. In other applications, Standby Empty can
represent the point that the battery can no longer support a subset of the full application operation, such as games
or organizer functions on a wireless handset. The standby load current and voltage are used for determining the
cell characteristics but are not programmed into the DS2782. The DS2782 reconstructs the Standby Empty line
from cell characteristic table values to determine the Standby Empty capacity of the battery at each temperature.
Reconstruction occurs in one-degree temperature increments.
CELL MODEL CONSTRUCTION
The model is constructed with all points normalized to the fully charged state at +40°C. Initial values, the +40°C
Full value in mVh units and the +40°C Active Empty value as a fraction of the +40°C Full are stored in the cell
parameter EEPROM block. Standby Empty at +40°C is by definition zero and therefore no storage is required. The
slopes (derivatives) of the 4 segments for each model curve are also stored in the cell parameter EEPROM block.
Segment endpoints are fixed at 0°C, +10°C, +20°C, +30°C and +40°C. An example of data stored in this manner is
shown in Table 1.
Table 1. Example Cell Characterization Table (Normalized to +40°C)
Manufacturers rated cell capacity: 1000mAh
Charge Voltage: 4.2V
Charge Current: 500mA
Termination Current: 50mA
Active Empty (V, I): 3.0V, 300mA
Sense Resistor: 0.020 ?
+40 ? C
Standby Empty (V, I): 3.0V, 4mA
Nominal
0°C
+10°C
+20°C
+30°C
+40°C
[mAh]
Full
Active Empty
Standby Empty
1051
0.927
0.051
0.013
0.951
0.040
0.0067
0.974
0.022
0.0038
0.991
0.012
0.001
1.0
0.008
0
Figure 13. Lookup Function Diagram
Cell Model
FULL(T)
Parameters
15 bytes
(EEPROM)
Temperature
Lookup
Function
14 of 28
AE(T)
SE(T)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2782E+ | 功能描述:电池管理 Stand-Alone Fuel Gauge 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 |
| DS2782E+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2782E+T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2782E+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE LI-ION/LI-POL 8TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE BATT 8TSSOP |
| DS2782E+T&R | 功能描述:电池管理 Stand-Alone Fuel Gauge 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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