參數(shù)資料
型號(hào)： DS2760XA
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(yè)數(shù)： 8/25頁(yè)
文件大?。?/td> 126K
代理商： DS2760XA
DS2760
8 of 25
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 (Overcurrent, Charge Direction) or (Protection Register bit CE = 0) or
(Sleep Mode)
CURRENT MEASUREMENT
In the Active Mode of operation, the DS2760 continually measures the current flow into and out of the
battery by measuring the voltage drop across a current sense resistor. The DS2760 is available in two
configurations: (1) internal 25 m
current sense resistor, and (2) external user-selectable sense resistor. In
either configuration, the DS2760 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). Note than when an external sense resistor is used, one end of the resistor must be
wired directly to VSS (the negative terminal of the cell) for proper operation of the current measurement
circuitry.
V
IS
is measured with a signed resolution of 12-bits. Measurements are placed in the Current Register in
two’s-complement format. 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 DS2760 maintains the Current Register in units of Amps,
with a resolution of 0.625 mA and full scale range of no less than
±
1.8A (see Note 7 on I
FS
spec for more
details). The DS2760 automatically compensates for internal sense resistor process variations and
temperature effects when reporting current.
For the external sense resistor configuration, the DS2760 writes the measured V
IS
voltage to the Current
Register, with a resolution of 15.625
μ
V and a full scale range of
±
64 mV.
CURRENT REGISTER FORMAT –
Figure 4
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: 0.625 mA for internal sense resistor
15.625
μ
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.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2760XA-025 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor
DS2761 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:High-Precision Li+ Battery Monitor
DS2761AE 功能描述:IC MON BATT LI-ION HP 16-TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:669 (CN2011-ZH PDF) 其它名稱(chēng):MCP73831T-2ACI/OTCT
DS2761AE+ 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
DS2761AE+025 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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