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参数资料
| 型号： | DS2780E+ |
| 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： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 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： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1436 (CN2011-ZH PDF) |
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DS2780 Standalone Fuel Gauge IC
current measurement and the conversion timebase. The ACR has a range of 0 to 409.6mVh with an LSb of
6.25 ? Vh. Additional read-only registers (ACRL) hold fractional results of each accumulation to avoid truncation
errors. Accumulation of charge current above the maximum register value is reported at the maximum register
value (7FFFh); conversely, accumulation of discharge current below the minimum register value is reported at the
minimum value (8000h).
Charge currents (positive Current register values) less than 100 ? V are not accumulated in order to mask the effect
of accumulating small positive offset errors over long periods. This limits the minimum charge current, for coulomb-
counting purposes, to 5mA for RSNS = 0.020 ? and 20mA for RSNS = 0.005 ? .
Read and write access is allowed to the ACR. The ACR must be written MSByte first then LSByte. The write must
be completed within 3.515s (one ACR register update period). A write to the ACR forces the ADC to perform an
offset correction conversion and update the internal offset correction factor. Current measurement and
accumulation begins with the second conversion following a write to the ACR. Writing the ACR clears the fractional
values in the ACRL. The format of the ACR is shown in Figure 8, and the ACRL is shown in Figure 9.
To preserve the ACR value in case of power loss, it 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 ? 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
VSS -
VSNS
6.25 ? Vh
20m ?
312.5 ? Ah
15m ?
416.7 ? Ah
R SNS
10m ?
625 ? Ah
5m ?
1.250mAh
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2780E/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/T&R | 制造商:Maxim Integrated Products 功能描述:STANDALONG FUELD CAUGE TSSOP T&R - Tape and Reel |
| DS2780E/T&R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone Fuel Gauge IC |
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