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参数资料
| 型号： | DS2777G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/46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： | 2,500 |
| 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： | 带卷 (TR) |
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2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
Temperature Measurement
The DS2775–DS2778 use an integrated temperature
sensor to measure battery temperature with a resolution
of 0.125°C. Temperature measurements are updated
every 440ms and placed in the Temperature register in
two’s complement form.
Current Measurement
In active mode, the DS2775–DS2778 continuously mea-
sure the current flow into and out of the battery by mea-
suring the voltage drop across a low-value current-sense
resistor, R SNS . The voltage-sense range between SNS
and V SS is ±51.2mV with a least significant bit (LSb) of
MSB—ADDRESS 0Ah
1.5625μV. The input linearly converts peak signal ampli-
tudes up to 102.4mV as long as the continuous signal
level (average over the conversion cycle period) does
not exceed ±51.2mV. The ADC samples the input differ-
entially at 18.6kHz and updates the Current register at
the completion of each conversion cycle (3.52s). Charge
currents above the maximum register value are reported
as 7FFFh. Discharge currents below the minimum regis-
ter value are reported as 8000h.
The Average Current register reports an average cur-
rent level over the preceding 28.16s. The register value
is updated every 28.16s in two’s complement form and
represents an average of the eight preceding Current
register values.
LSB—ADDRESS 0Bh
S
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
X
X
X
X
X
MSb
“S ”: SIGN BIT(S), “X”: RESERVED
LSb
MSb
UNITS: 0.125°C
LSb
Figure 5. Temperature Register Format
MSB—ADDRESS 0Eh
LSB—ADDRESS 0Fh
S
2 14
2 13
2 12
2 11
2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
MSb
“S ”: SIGN BIT(S)
LSb
MSb
UNITS: 1.5625μV/R SNS
LSb
Figure 6. Current Register Format
MSB—ADDRESS 08h
LSB—ADDRESS 09h
S
2 14
2 13
2 12
2 11
2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
MSb
“S ”: SIGN BIT(S)
LSb
MSb
UNITS: 1.5625μV/R SNS
LSb
Figure 7. Average Current Register Format
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2777K | 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 |
| DS2778 | 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 |
| DS2778EVKIT+ | 制造商:Maxim Integrated Products 功能描述:DS2778 EVAL KIT - Boxed Product (Development Kits) |
| DS2778G | 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 |
| DS2778G+ | 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 |
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