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| 型号： | DS2777G+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/46页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE LI+ 2CELL 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 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： | 4 V ~ 9.2 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x5） |
| 包装： | 管件 |
| 产品目录页面： | 1436 (CN2011-ZH PDF) |
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2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
SEGMENT 1
SEGMENT 2
SEGMENT 3
SEGMENT 4
SEGMENT 5
100%
DERIVATIVE
FULL
(ppm/ ° C)
CELL
CHARACTERIZATION DATA
ACTIVE
EMPTY
STANDBY
EMPTY
TBP12
TBP23
TBP34
+40 ° C
Figure 14. Cell Model Example Diagram
read from the Current register. The specified minimum
voltage, or active-empty voltage (VAE), should be a
110ms average value to correspond to the values read
from the voltage register. The VAE value represents the
average of the two cell’s voltages, V IN1 and V IN2 . The
DS2775–DS2778 reconstruct the active-empty line from
the cell characteristic table to determine the active-
empty capacity of the battery at each temperature.
Reconstruction occurs in one-degree temperature
increments.
Standby Empty
The standby-empty curve defines the variation of the
standby-empty point over temperature. The standby-
empty point is defined as the minimum voltage required
for standby operation at a discharge rate dictated by
the application standby current. In typical handheld
applications, standby empty represents the point that
the battery can no longer support DRAM refresh and
thus the standby voltage is set by the minimum DRAM
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. The
standby-load current and voltage are used for deter-
mining the cell characteristics but are not programmed
into the DS2775–DS2778. The DS2775–DS2778 recon-
struct the standby-empty line from the cell characteris-
tic table 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. All values are stored in
the cell parameter EEPROM block. The +40°C full value
is stored in μVh with an LSb of 6.25μVh. The +40°C
active-empty value is stored as a percentage of +40°C
20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2777G+ | 功能描述:电池管理 2-Cell Stand-Alone Li+ 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 |
| DS2777G+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:2S FG PROT 2W 14L 3X5 TDFN T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE LI+ 2CELL 14-TDFN 制造商:Maxim Integrated Products 功能描述:Battery Management 2-Cell Stand-Alone Li+ Fuel-Gauge |
| DS2777G+T&R | 功能描述:电池管理 2-Cell Stand-Alone Li+ 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 |
| DS2777G+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with Protector and Optional SHA-1 Authentication |
| DS2777GR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with Protector and Optional SHA-1 Authentication |
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