参数资料
型号: DS2756E+T&R
厂商: Maxim Integrated Products
文件页数: 8/27页
文件大小: 0K
描述: IC FUEL GAUGE BATT 8TSSOP
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: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 带卷 (TR)
DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode
command targeting the ACR register address. A write to the ACR results in an automatic copy of the new value to
EEPROM.
Figure 5. Accumulated Current Register Format
MSB-Address 10h
LSB-Address 11h
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
LSb
MSb
Units:
LSb
6.25 ? Vh/R SNS
ACR LSB
V IS1 - V IS2
6.25 ? Vh
20m ?
312.5 ? Ah
15m ?
416.7 ? Ah
R SNS
10m ?
625 ? Ah
5m ?
1.250mAh
ACR RANGE
V IS1 - V IS2
±204.8mVh
20m ?
±10.24Ah
15m ?
±13.65Ah
R SNS
10m ?
±20.48Ah
5m ?
±40.96Ah
OFFSET ACCUMULATION BLANKING
In order to avoid the accumulation of small positive offset errors over long periods, an offset blanking filter is
provided. The blanking filter is enabled by setting the OBEN bit in the Status Register. When OBEN is set, charge
currents (positive Current register values) between 15.625 ? V and 62.5 ? V are not accumulated in the ACR.
Therefore, with R SNS = 0.020 ?? positive currents between 0.78mA and 3.125mA are blanked from accumulation in
the ACR.
ACCUMULATION BIAS
Systematic errors or an application preference can require the application of an arbitrary bias to the current
accumulation process. The Accumulation Bias register is provided to allow a user programmed constant positive or
negative polarity bias to the current accumulation process. The Accumulation Bias value can be used to estimate
battery currents that do not flow through the sense resistor, estimate battery self-discharge, or correct for offset
error in the Current register and ACR register. The user programmed two’s complement value in the Accumulation
Bias register is added to the Current Register once per current sample. The register format supports the
accumulation bias to be applied in 1.95 ? V increments over a ±250 ? V range. When using a 20m ? sense resistor,
the bias control is 100 ? A over a ±12.5mA range.
The Accumulation Bias register is directly read and write accessible. The user value is made non-volatile with a
Copy Data command targeting EEPROM block 0. The Accumulation Bias register is loaded from EEPROM
memory on power up and a transition from Sleep to Active mode.
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相关代理商/技术参数
参数描述
DS2756EVKIT+ 制造商:Maxim Integrated Products 功能描述:HIGH-ACCURACY BATTERY FUEL GAUGE WITH PROGRAMMABLE SUSPEND M - Boxed Product (Development Kits)
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DS275E 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
DS275E/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC TXRX LINE-PWR RS232 14-TSSOP
DS275E/T&R 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: