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参数资料
| 型号： | DS2788E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/32页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE W/DSP DRV 14TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 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： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1437 (CN2011-ZH PDF) |
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Stand-Alone Fuel-Gauge IC with
LED Display Drivers
named full, active empty, and standby empty. Each
model curve is constructed with five line segments,
numbered 1 through 5. Above +50°C, the segment 5
model curves extend infinitely with zero slope, approxi-
mating the nearly flat change in capacity of Li+ cells at
temperatures above +50°C. Segment 4 of each model
curves originates at +50°C on its upper end and
extends downward in temperature to +25°C. Segment
3 joins with segment 2, which in turn joins with segment
1. Segment 1 of each model curve extends from the
junction with segment 2 to infinitely colder tempera-
tures. Segment slopes are stored as μVh ppm change
per °C. The two junctions or breakpoints that join the
segments (labeled TBP12 and TBP23 in Figure 12) are
programmable in 1°C increments from -128°C to
+25°C. They are stored in two’s complement format,
TBP23 at 7Ch, and TBP12 at 7Dh. The slope or deriva-
tive for segments 1, 2, 3, and 4 are also programmable.
Full: The full curve defines how the full point of a given
cell stack depends on temperature for a given charge
termination. The charge termination method used in the
application is used to determine the table values. The
DS2788 reconstructs the full line from cell characteristic
table values to determine the full capacity of the battery
at each temperature. Reconstruction occurs in one-
degree temperature increments. Full values are stored
as ppm change per °C. For example, if a cell had a
nominal capacity of 1214mAh at +50°C, a full value of
1199mAh at +25°C, and 1182mAh at 0°C (TBP23), the
slope for segment 3 would be:
((1199mAh - 1182mAh) / (1214mAh / 1M)) /
(25°C - 0°C) = 560ppm/°C
1 LSB of the slope registers equals 61ppm so the full
segment 3 slope register (location 0x6Dh) would be
programmed with a value of 0x09h. Each Slope register
has a dynamic range 0ppm to 15555ppm.
SEGMENT 1
SEGMENT 2
SEGMENT 3
SEGMENT 4
SEGMENT 5
100%
DERIVATIVE
FULL
(ppm/ ° C)
CELL
CHARACTERIZATION
ACTIVE
EMPTY
STANDBY
EMPTY
TBP12
TBP23
+25 ° C
+50 ° C
Figure 12. Cell Model Example Diagram
______________________________________________________________________________________
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2788E+ | 功能描述:电池管理 Stand-Alone F-Gauge w/LED Display Drvrs 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 |
| DS2788E+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE LI-ION/LI-POL 14TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE W/DSP DRV 14TSSOP |
| DS2788E+T&R | 功能描述:电池管理 Stand-Alone F-Gauge w/LED Display Drvrs 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 |
| DS2788E+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel-Gauge IC with LED Display Drivers |
| DS2788EVKIT+ | 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 |
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