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参数资料
| 型号： | DS2780E+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/31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： | 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： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
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DS2780 Standalone Fuel Gauge IC
CELL MODEL CONSTRUCTION
The model is constructed with all points normalized to the fully charged state at +40°C. All values are stored in the
cell parameter EEPROM block. The +40°C Full value is stored in uVhr with an LSB of 6.25uVhr. The +40°C Active
Empty value is stored as a percentage of +40°C Full with a resolution of 2 -10 . 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 stored in the cell parameter EEPROM block as PPM/°C. Segment endpoints are fixed at 0°C, +10°C,
+20°C, +30°C and +40°C. (See Application Note 3584 for more details on how values are stored.) An example of
cell model data is shown in Table 1a. Table 1b shows the actual data values stored in memory.
Table 1a. Example Cell Characterization Table (Normalized to +40°C)
Rated cell capacity: 1000mAh
Charge Voltage: 4.2V
Active Empty (V): 3.0V
Sense Resistor: 0.020 ?
+40 ? C
Terminating Current: 50mA
Active Empty (I): 300mA
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
Table 1b. Example Cell Characterization Table (Actual data values stored in EEPROM)
Rated cell capacity: 0C80h
Charge Voltage: D7h
Active Empty (V): 9Ah
Sense Resistor: 32h
+40 ? C
Terminating Current: 14h
Active Empty (I): 1Eh
Nominal
0°C
+10°C
+20°C
+30°C
+40°C
[mAh]
Full
Active Empty
Standby Empty
0D32h
27h
12h
0Ah
26h
1Eh
05h
1Ch
10h
05h
0Fh
07h
02h
0D32h
08h
Figure 13. Lookup Function Diagram
Cell Model
FULL(T)
Parameters
15 bytes
(EEPROM)
Temperature
Lookup
Function
AE(T)
SE(T)
APPLICATION PARAMETERS
In addition to cell model characteristics, several application parameters are needed to detect the full and empty
points, as well as calculate results in mAh units.
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相关代理商/技术参数 |
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|---|---|
| DS2780EVKIT+ | 制造商:Maxim Integrated Products 功能描述:DS2780 EVAL KIT - Boxed Product (Development Kits) |
| DS2780G+ | 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 |
| DS2780G+T&R | 制造商:Maxim Integrated Products 功能描述:STANDALONE FUELGAUGE 10-TDFN T&R LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE STAND ALONE 10TDFN 制造商:Maxim Integrated Products 功能描述:Battery Management Stand-Alone Fuel Gauge |
| DS2780G+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 |
| DS2780G+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone Fuel Gauge IC |
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