參數(shù)資料
型號(hào)： DS2761
英文描述： High-Precision Li+ Battery Monitor
中文描述： 高精度、Li+電池監(jiān)視器
文件頁(yè)數(shù)： 9/24頁(yè)
文件大小： 286K
代理商： DS2761
DS2761
9 of 24
When the internal sense resistor is used, the DS2761 maintains the current accumulator in units of amp-
hours, with a resolution of 0.25mAhrs and full-scale range of 8.2Ahrs. When using an external sense
resistor, the DS2761 maintains the current accumulator in units of volt-hours, with a resolution of
6.25 Vhrs and a full scale range of 205mVhrs.
The current accumulator is a read/write register that can be altered by the host system as needed.
Figure 5.
CURRENT ACCUMULATOR FORMAT
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: 0.25mAhrs for Internal Sense Resistor
6.25 Vhrs for External Sense Resistor
CURRENT OFFSET COMPENSATION
Current measurement and 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 can 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. The current offset
bias is applied to both the internal and external sense resistor configurations. The factory default for the
current offset bias is a value of 0.
Figure 6.
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 DS2761 continually measures the voltage between pins V
IN
and V
SS
over a range of 0 to 4.75V. The
voltage register is updated in two’s-complement format every 3.4ms with a resolution of 4.88mV.
Voltages above the maximum register value are reported as the maximum value. The voltage register
format is shown in Figure 7.
相關(guān)PDF資料
PDF描述
DS2761AE High-Precision Li+ Battery Monitor
DS2761AX High-Precision Li+ Battery Monitor
DS2761BE High-Precision Li+ Battery Monitor
DS2761BX-025 High-Precision Li+ Battery Monitor
DS276S Low Power Transceiver Chip
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2761AE 功能描述:IC MON BATT LI-ION HP 16-TSSOP RoHS:否 類別: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:MCP73831T-2ACI/OTCT
DS2761AE+ 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型: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/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC MON BATT LI-ION HP 16-TSSOP
DS2761AE+025/T&R 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型: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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