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參數(shù)資料
| 型號： | DS2786BG+T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, TDFN-10 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 363K |
| 代理商： | DS2786BG+T&R |
DS2786B
Stand-Alone OCV-Based Fuel Gauge
______________________________________________________________________________________
13
OCV Cell Model
The OCV cell model is a 9-point piece-wise linear
approximation of open-circuit cell voltage vs. the
remaining capacity of the cell. Whenever an OCV
update occurs, the Relative Capacity Register is adjust-
ed to a new value based on the OCV voltage reading
and a linear approximation of the table values. Figure 15
shows the factory-default cell model stored in EEPROM.
The OCV cell model can be modified by changing the
Capacity and Voltage Breakpoint Registers in EEPROM.
Capacity 0 is fixed at 0% and cannot be changed.
Capacity 1 through Capacity 7 are stored with 0.5%
resolution at addresses 61h through 67h, respectively.
Capacity values must be monotonic (Capacity 1 >
Capacity 0, Capacity 2 > Capacity 1, etc.), but other-
wise can be written to any value between 0.5% to
99.5%. Capacity 8 is fixed at a value of 100% and can-
not be changed. See Figure 16.
Voltage breakpoints require 2 bytes per breakpoint, but
are otherwise stored in a similar manner: voltage break-
point 0: MSB stored at address 68h, LSB stored at
address 69h. Other voltage breakpoints are stored
sequentially through address location 79h. Each volt-
age breakpoint has a resolution of 1.22mV, and a range
from 0.0V to 4.996V. Voltage breakpoint values must
also be monotonic. Figure 17 is the Voltage Breakpoint
Register format.
3.0
3.2
3.4
3.6
3.8
4.0
4.2
0%
20%
40%
60%
80%
100%
BREAKPOINT 8
4.171V
100%
BREAKPOINT 6
4.042V
85%
BREAKPOINT 5
4.005V
80%
BREAKPOINT 3
3.752V
25%
BREAKPOINT 1
3.619V
5%
BREAKPOINT 0
3.186V
0%
BREAKPOINT 7
4.087V
90.5%
BREAKPOINT 4
3.831V
52.5%
BREAKPOINT 2
3.673V
10%
Figure 15. DS2786BG-C3 OCV Cell Model
ADDRESS 61h–67h
2
7
2
6
2
5
2
4
2
3
2
1
2
0
MSB
LSB
UNITS: 0.5%
Figure 16. Capacity 1 to Capacity 7 Registers Format
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2786BK | 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| DS2786G+ | 功能描述:電池管理 Stand-Alone OCV Based Fuel Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2786G+T&R | 制造商:Maxim Integrated Products 功能描述:STAND ALONE OCV BASED FUEL GAUGE LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE OCV 10-TDFN 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE STANDALONE OCV TDFN-10 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE STANDALONE OCV, TDFN-10 |
| DS2786G+T&R | 功能描述:電池管理 Stand-Alone OCV Based Fuel Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2786G+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
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