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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： | 19/21页 |
| 文件大小： | 363K |
| 代理商： | DS2786BG+T&R |
DS2786B
Stand-Alone OCV-Based Fuel Gauge
_______________________________________________________________________________________
7
The DS2786B provides accurate relative capacity mea-
surements during periods of host system inactivity by
looking at cell open-circuit voltage. Cell capacity is cal-
culated using an OCV voltage profile and a 1-byte
scale factor to weight-accumulated current. The OCV
voltage profile and scale factor are stored in EEPROM
memory. The EEPROM memory is constructed with a
SRAM shadow so that the OCV voltage profile and
scale factor can be overwritten by the host to accom-
modate a variety of cell types and capacities from mul-
tiple-cell vendors. The I2C interface also allows
read/write access to the Status, Configuration, and
Measurement Registers.
Power Modes
The DS2786B operates in one of two power modes:
Active and Sleep. While in Active Mode, the DS2786B
operates as a high-precision battery monitor with temper-
ature, voltage, auxiliary inputs, current, and accumulated
current measurements acquired continuously and the
resulting values updated in the measurement registers. In
Sleep Mode, the DS2786B operates in a low-power mode
with no measurement activity. Read-and-write access is
allowed to all registers in either mode.
The DS2786B operating mode transitions from sleep to
active when:
(SCL > VIH) or (SDA > VIH)
The DS2786B operating mode transitions from Active to
Sleep when:
SMOD = 1 and (SCL < VIL) and (SDA < VIL)
for tSLEEP
Caution: If SMOD = 1, a pullup resistor is required on
SCL and SDA in order to ensure that the DS2786B tran-
sitions from Sleep to Active Mode when the battery is
charged. If the bus is not pulled up, the DS2786B
remains in Sleep and cannot accumulate the charge
current. This caution statement applies particularly to a
battery that is charged on a standalone charger.
AIN0
VIN
VOUT
AIN1
SDA
VSS
SCL
(1) OPTIONAL FOR 8kV/15kV ESD
SNS
VDD
VPROG
PACK-
PACK+
PACKID
THERM
PROTECTION IC
(Li+/POLYMER)
SYSTEM
VSS
SYSTEM
SERIAL
BUS
PROGRAMMING
TEST POINT
SYSTEM
VDD
BATTERY
SYSTEM
RSNS
150
Ω
10nF
5.6V
(1)
1k
Ω
1nF
1k
Ω
1k
Ω
2.5V
(1)
DS2786B
Figure 3. Application Example
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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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