参数资料
型号: DS2781E+T&R
厂商: Maxim Integrated Products
文件页数: 10/31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: 2.5 V ~ 10 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)
DS2781
update the internal offset correction factor. Current measurement and accumulation begins with the second
conversion following a write to the ACR. Writing ACR clears the fractional values in ACRL. The Format of the ACR
register is shown in Figure 8, and the format of ACRL is shown in Figure 9.
In order to preserve the ACR value in case of power loss, the ACR value is backed up to EEPROM. The ACR
value is recovered from EEPROM on power-up. See the Memory Map in Table 2 for specific address location and
backup frequency.
Figure 8. Accumulated Current Register Format, ACR
ACR
MSB—Address 10h
LSB—Address 11h
R/W & EE
2 15
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 μ Vh/Rsns
Figure 9. Fractional/Low Accumulated Current Register Format, ACRL
ACRL
MSB—Address 12h
LSB—Address 13h
Read Only
2 11
2 10
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
X
X
X
X
MSb
“X”: reserved
LSb
MSb
LSb
Units:1.526nVHr/R SNS
ACR LSb
V SS - V SNS
6.25 μ Vh
20m Ω
312.5 μ Ah
15m Ω
416.7 μ Ah
R SNS
10m Ω
625 μ Ah
5m Ω
1.250mAh
ACR RANGE
V SS - V SNS
409.6mVh
20m Ω
20.48Ah
15m Ω
27.30Ah
R SNS
10m Ω
40.96Ah
5m Ω
81.92Ah
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