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参数资料
| 型号： | DS2761BX-025/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | IC MON BATT LI-ION HP FLIP-CHIP |
| 标准包装： | 10,000 |
| 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： | 12-UFBGA，FCBGA |
| 供应商设备封装： | 12-覆晶 |
| 包装： | 带卷 (TR) |
DS2761
Summary. All of the protection conditions described above are OR'ed together to affect the CC and DC
outputs.
DC = (Undervoltage) or (Overcurrent, Either Direction) or (Short Circuit) or
(Protection Register Bit DE = 0) or (Sleep Mode)
CC = (Overvoltage) or (Undervoltage) or (Overcurrent, Charge Direction) or (Protection Register
bit CE = 0) or (Sleep Mode)
CURRENT MEASUREMENT
In the active mode of operation, the DS2761 continually measures the current flow into and out of the
battery by measuring the voltage drop across a current-sense resistor. The DS2761 is available in two
configurations: 1) internal 25m W current-sense resistor, and 2) external user-selectable sense resistor. In
either configuration, the DS2761 considers the voltage difference between pins IS1 and IS2 (V IS = V IS1 -
V IS2 ) to be the filtered voltage drop across the sense resistor. A positive V IS value indicates current is
flowing into the battery (charging), while a negative V IS value indicates current is flowing out of the
battery (discharging).
V IS is measured with a signed resolution of 12-bits. The current register is updated in two’s-complement
format every 88ms (128/fsample) with an average of 128 readings. Currents outside the range of the
register are reported at the limit of the range. The format of the current register is shown in Figure 4.
For the internal sense resistor configuration, the DS2761 maintains the current register in units of amps,
with a resolution of 0.625mA and full-scale range of no less than ± 1.9A (see Note 7 on I FS spec for more
details). The DS2761 automatically compensates for internal sense resistor process variations and
temperature effects when reporting current.
For the external sense resistor configuration, the DS2761 writes the measured V IS voltage to the current
register, with a resolution of 15.625 m V and a full-scale range of ± 64mV.
Figure 4. CURRENT REGISTER FORMAT
MSB—Address 0E
LSB—Address 0F
S
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
MSb
LSb
MSb
LSb
Units: 0.625mA for Internal Sense Resistor
15.625 m V for External Sense Resistor
CURRENT ACCUMULATOR
The current accumulator facilitates remaining capacity estimation by tracking the net current flow into
and out of the battery. Current flow into the battery increments the current accumulator while current
flow out of the battery decrements it. Data is maintained in the current accumulator in two’s-complement
format. The format of the current accumulator is shown in Figure 5.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2761K | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Li+ Battery Monitor Evaluation Kit |
| DS2762 | 制造商:Maxim Integrated Products 功能描述:HIGH-PRECISION LI+ BATTERY MONITOR WITH ALERTS - Rail/Tube |
| DS2762A | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor With Alerts |
| DS2762AE | 制造商:Maxim Integrated Products 功能描述:BAT MON/PROT VOV-4.275 TSSOP - Rail/Tube |
| DS2762AE/T&R | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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