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参数资料
| 型号： | DS2786BG+T&R |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, TDFN-10 |
| 文件页数： | 7/21页 |
| 文件大小： | 363K |
| 代理商： | DS2786BG+T&R |
DS2786B
Stand-Alone OCV-Based Fuel Gauge
______________________________________________________________________________________
15
The learn delta percent threshold allows the application
to select how large a cell capacity change is required
before the new cell-capacity value is learned. The dif-
ference between the present OCV measurement and
the last OCV measurement must be greater than the
learn delta percent threshold value for a learn to occur.
This prevents IC measurement resolution from adding
error to the learned cell-capacity value. It is recom-
mended this register be set to a value of at least 50%.
Figure 20 shows the learn delta percent threshold.
Memory Map
The DS2786B has memory space with registers for instru-
mentation, status, and control. When the MSB of a 2-byte
register is read, both the MSB and LSB are latched and
held for the duration of the read data command to pre-
vent updates during the read and ensure synchronization
between the 2 register bytes. For consistent results,
always read the MSB and the LSB of a 2-byte register
during the same read data command sequence.
Memory locations 60h through 7Fh are EEPROM stor-
age locations. EEPROM memory is shadowed by RAM
to eliminate programming delays between writes and to
allow the data to be verified by the host system before
being copied to EEPROM. The read data and write data
protocols to/from EEPROM memory addresses access
the shadow RAM. Setting the RCALL bit in the
Command Register (FEh) initiates data transfer from the
EEPROM to the shadow RAM. See Figure 21.
Setting the COPY bit in the Command Register initiates
data transfer from the shadow RAM to the EEPROM. An
external voltage supply must be provided on the
VPROG pin prior to writing the COPY bit. The DS2786B
requires the COPY bit be reset to zero within the tPROG
time window to properly program EEPROM. Resetting
COPY too soon might prevent a proper write of the
cells. Resetting COPY too late might degrade EEPROM
copy endurance.
The DS2786B uses shadow RAM data for fuel-gauge
calculations. Fuel-gauge information can be changed in
the application by writing the shadow RAM locations.
Afterwards, the SOCV bit should be written to reset the
fuel gauge. Note that any reset of the IC causes the
shadow RAM data to be restored from EEPROM.
ADDRESS 7Eh
2
7
2
6
2
5
2
4
2
3
2
1
2
0
MSB
LSB
UNITS: 0.5%
Figure 20. Learn Delta Percent Threshold
SHADOW
EEPROM
WRITE
RECALL
COPY
READ
SERIAL
INTERFACE
Figure 21. EEPROM Access Through Shadow RAM
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2786BK | 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 |
| DS2786G+ | 功能描述:电池管理 Stand-Alone OCV Based 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 |
| 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:电池管理 Stand-Alone OCV Based 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 |
| DS2786G+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
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