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参数资料
| 型号： | DS2784G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/43页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE STND-ALONE 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： | 2.5 V ~ 4.6 V |
| 工作温度： | -40°C ~ 85°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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DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
VOLTAGE MEASUREMENT
Battery voltage is measured every 440ms on the V IN pin with respect to V SS . Measurements have a 0 to 4.6V range
and a 4.88mV resolution. The value is stored in the voltage register in two’s complement form and is updated every
440ms. Voltages above the maximum register value are reported at the maximum value; voltages below the
minimum register value are reported at the minimum value.
VOLTAGE REGISTER FORMAT
MSB—ADDRESS 0Ch
LSB—ADDRESS 0Dh
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
LSb
Units: 4.886mV
TEMPERATURE MEASUREMENT
The DS2784 uses 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.
TEMPERATURE REGISTER FORMAT
MSB—ADDRESS 0Ah
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
LSb
Units: 0.125 ° C
Note: Temperature and battery voltage (V IN ) are measured using the same ADC. Therefore, measurements are a 220ms average updated
every 440ms.
CURRENT MEASUREMENT
The DS2784 continually measures the current flow into and out of the battery by measuring the voltage drop across
a low-value current-sense resistor, R SNS . The voltage-sense range between SNS and V SS is ±51.2mV. The input
linearly converts peak-signal amplitudes 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 differentially 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 register value are reported
as 8000h.
CURRENT REGISTER FORMAT
MSB—ADDRESS 0Eh
LSB—ADDRESS 0Fh
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
S
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSb
“S”: Sign Bit(s)
LSb
MSb
LSb
Units: 1.5625 μ V/R SNS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2784K | 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 |
| DS2786 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone OCV-Based Fuel Gauge |
| DS2786_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
| DS2786B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
| DS2786BEVKIT+ | 制造商:Maxim Integrated Products 功能描述:STANDALONE OCV-BASED FUEL GAUGE - Boxed Product (Development Kits) |
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