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參數(shù)資料
| 型號： | DS2760EA |
| 英文描述： | High Precision Li-Ion Battery Monitor |
| 中文描述： | 高精度鋰離子電池監(jiān)視器 |
| 文件頁數(shù)： | 9/25頁 |
| 文件大?。?/td> | 126K |
| 代理商： | DS2760EA |
DS2760
9 of 25
When the internal sense resistor is used, the DS2760 maintains the Current Accumulator in units of Amp-
hours, with a resolution of 0.25 mAhrs and full scale range of
±
8.2 Ahrs. When using an external sense
resistor, the DS2760 maintains the Current Accumulator in units of Volt-hours, with a resolution of
6.25
μ
Vhrs and a full scale range of
±
205 mVhrs.
The Current Accumulator is a read/write register that can be altered by the host system as needed.
CURRENT ACCUMULATOR FORMAT –
Figure 5
MSB—Address 10
LSB—Address 11
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
LSb
Units: 0.25 mAhrs for internal sense resistor
6.25
μ
Vhrs for external sense resistor
CURRENT OFFSET COMPENSATION
CURRENT MEASUREMENT and the CURRENT ACCUMULATION are both internally compensated
for offset on a continual basis minimizing error resulting from variations in device temperature and
voltage. Additionally a constant bias may be utilized to alter any other sources of offset. This bias resides
in EEPROM address 33h in two’s-complement format and is subtracted from each current measurement.
CURRENT OFFSET BIAS –
Figure 6
Address 33
S
2
6
2
5
2
4
2
3
2
2
2
1
2
0
MSb
LSb
Units: 0.625 mA for internal sense resistor
15.625
μ
V for external sense resistor
VOLTAGE MEASUREMENT
The DS2760 continually measures the voltage between pins VIN and VSS over a range of 0 to 5-volts.
The resulting data is placed in the Voltage Register in two’s-complement format with a resolution of
4.88 mV. Voltages above the maximum register value are reported as the maximum value. The Voltage
Register format is shown in Figure 7.
VOLTAGE REGISTER FORMAT –
Figure 7
MSB—Address 0C
LSB—Address 0D
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
LSb
MSb
LSb
Units: 4.88 mV
相關PDF資料 |
PDF描述 |
|---|---|
| DS2760T | High Precision Li-Ion Battery Monitor |
| DS2760TA | High Precision Li-Ion Battery Monitor |
| DS2760X | High Precision Li-Ion Battery Monitor |
| DS2760XA | High Precision Li-Ion Battery Monitor |
| DS2770 | Battery Monitor and Charge Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2760EA-025 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Li＜SUP＞+＜/SUP＞ Battery Monitor Evaluation Kit |
| DS2760PALM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fuel Pack Demonstration Software for Palm III and m100 PDAs |
| DS2760T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760T-025 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
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