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参数资料
| 型号： | DS2764AE+025 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/20页 |
| 文件大小： | 0K |
| 描述： | IC MON BATT LI-ION HP 16-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 功能： | 电池监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
DS2764 High-Precision Li+ Battery Monitor With 2-Wire Interface
CURRENT OFFSET COMPENSATION
The current measurement and current accumulation are internally compensated for offset on a continual basis
minimizing error resulting from variations in device temperature and voltage. Additionally, the Current Offset Bias
register is a user programmable constant bias that can be used to alter the offset of the Current and Accumulated
current registers. User programmed bias values can be used to correct for offset errors after final assembly of the
module or pack. An offset value can be purposely chosen to bias current accumulation in the discharge polarity to
ensure a pessimistic accounting of ? A level standby currents.
The Current Offset Bias value resides in EEPROM address 33h in two’s-complement format and is subtracted from
current measurements during the accumulation process. The Current Offset Bias is applied to the internal and
external sense resistor configurations. The factory default for EEPROM address 33h is 0.
Figure 7. Current Offset Bias
Address 33
S
2 6
2 5
2 4
2 3
2 2
2 1
2 0
MSb
LSb
Units: 0.625mA for Internal Sense Resistor
15.625 ? V for External Sense Resistor
VOLTAGE MEASUREMENT
The DS2764 continually measures the voltage between pins V IN and V SS over a 0 to 4.75V range. The voltage
register is updated in two’s-complement format every 3.4ms with a 4.88mV resolution. Voltages above the
maximum register value are reported as the maximum value. Figure 8 shows the voltage register format.
Figure 8. Voltage Register Format
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: 4.88mV
TEMPERATURE MEASUREMENT
The DS2764 uses an integrated temperature sensor to continually measure battery temperature. Temperature
measurements are placed in the temperature register every 220ms in two’s-complement format with a 0.125°C
resolution over a ? 127°C range. Figure 9 shows the temperature register format.
Figure 9. Temperature Register Format
MSB—Address 18
LSB—Address 19
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: 0.125 ? C
12 of 20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2764AE-025/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor with 2-Wire Interface |
| DS2764AE-025/T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor with 2-Wire Interface |
| DS2764AE-025/T&R | 制造商:Maxim Integrated Products 功能描述:LI+BATT MNTR2WIRE 4.275OV16P TSSOP - Tape and Reel |
| DS2764AE-025/T&R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor with 2-Wire Interface |
| DS2764AR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor with 2-Wire Interface |
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