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參數(shù)資料
| 型號： | DS2438 |
| 英文描述： | Smart Battery Monitor |
| 中文描述： | 智能電池監(jiān)視器 |
| 文件頁數(shù)： | 3/29頁 |
| 文件大小： | 351K |
| 代理商： | DS2438 |
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DS2438
3 of 29
PARASITE POWER
The block diagram (Figure 1) shows the parasite-powered circuitry. This circuitry “steals” power
whenever the DQ pin is high. DQ will provide sufficient power as long as the specified timing and
voltage requirements are met (see the section titled “1-Wire Bus System”). The advantage of parasite
power is that the ROM may be read in absence of normal power, i.e., if the battery pack is completely
discharged.
DS2438 BLOCK DIAGRAM
Figure 1
OPERATION-MEASURING TEMPERATURE
The DS2438 measures temperatures through the use of an on-board temperature measurement technique.
The temperature reading is provided in a 13-bit, two’s complement format, which provides 0.03125
°
C of
resolution. Table 1 describes the exact relationship of output data to measured temperature. The data is
transmitted serially over the 1-Wire interface. The DS2438 can measure temperature over the range of
-55
°
C to +125
°
C in 0.03125
°
C increments. For Fahrenheit usage, a lookup table or conversion factor
must be used.
Note that temperature is represented in the DS2438 in terms of a 0.03125
°
C LSb, yielding the following
13-bit format. The 3 least significant bits of the Temperature Register will always be 0. The remaining
13 bits contain the two’s complement representation of the temperature in
°
C, with the MSb holding the
sign (S) bit. See “Memory Map” section for the Temperature Register address location.
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| DS2438Z | Smart Battery Monitor |
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| DS2501 | 1A VERY LOW DROPOUT VOLTAGE REGULATORS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2438AZ | 功能描述:IC MONITOR SMART BATTERY 8-SOIC 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)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| DS2438AZ/T&R | 制造商:Maxim Integrated Products 功能描述:SMART BATTERY MONITOR 8-SOIC/T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MONITOR SMART BATTERY 8-SOIC |
| DS2438AZ/T&R | 功能描述:IC MONITOR SMART BATTERY 8-SOIC 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)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| DS2438AZ+ | 功能描述:電池管理 Smart Battery Monitor 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 |
| DS2438AZ+ | 制造商:Maxim Integrated Products 功能描述:IC BATTERY MONITOR LI-ION 10V SOIC-8 |
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