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參數(shù)資料
| 型號： | MIC281-7BM6 TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 657K |
| 描述： | IC SUPERVISOR THERMAL SOT23-6 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 系列： | IttyBitty® |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 外部 |
| 感應(yīng)溫度： | 外部傳感器 |
| 精確度： | ±3°C（最小值） |
| 拓?fù)洌?/td> | ADC，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報(bào)： | 無 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC281-7BM6TR MIC281-7BM6TR-ND |
icrel, Inc.
MIC281
pril 23, 2014
12
Revision 2.0
Layout Considerations
The following guidelines should be kept in mind when
designing and laying out circuits using the MIC281.
1. Place the MIC281 as close to the remote diode as
possible, while taking care to avoid severe noise
sources such as high frequency power transformers,
CRTs, memory and data busses, and the like.
2. Because any conductance from the various voltages
on the PC board and the T1 line can induce serious
errors, it is good practice to guard the remote diode's
emitter trace with a pair of ground traces. These
ground traces should be returned to the MIC281's own
ground pin. They should not be grounded at any other
part of their run. However, it is highly desirable to use
these guard traces to carry the diode's own ground
return back to the ground pin of the MIC281, thereby
providing a Kelvin connection for the base of the
diode. See Figure 3.
3. When using the MIC281 to sense the temperature of a
processor or other device which has an integral
thermal diode, e.g., Intel's Pentium III, connect the
emitter and base of the remote sensor to the MIC281
using the guard traces and Kelvin return shown in
Figure 3. The collector of the remote diode is typically
inaccessible to the user on these devices.
4. Due to the small currents involved in the measurement
of the remote diodes V
BE
, it is important to
adequately clean the PC board after soldering to
prevent current leakage. This is most likely to show up
as an issue in situations where water-soluble soldering
uxes are used.
5. In general, wider traces for the ground and T1 lines will
help reduce susceptibility to radiated noise (wider
traces are less inductive). Use trace widths and
spacing of 10mm wherever possible and provide a
ground plane under the MIC281 and under the
connections from the MIC281 to the remote diode.
This will help guard against stray noise pickup.
6. Always place a good quality power supply bypass
capacitor directly adjacent to, or underneath, the
MIC281. This should be a 0.1礔 ceramic capacitor.
Surface-mount parts provide the best bypassing
because of their low inductance.
Figure 3. Guard Traces/Kelvin Ground Returns
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| MIC281-7YM6 TR | 功能描述:板上安裝溫度傳感器 Local and Remote Temperature Sensor with I2C Temperature Sensor in SOT23-6 (Lead Free) RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MIC2821-4GJLYML TR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Single DC/DC + 3 LDOs w/ Indep Enables RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MIC2821-4GJLYML-TR | 功能描述:Handheld/Mobile Devices PMIC 16-MLF? (4x4) 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 應(yīng)用:手持/移動設(shè)備 電流 - 電源:- 電壓 - 電源:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商器件封裝:16-MLF?（4x4） 標(biāo)準(zhǔn)包裝:1 |
| MIC2821-4GMSYML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC2821-4GMSYML TR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Single DC/DC + 3 LDOs w/ Indep Enables RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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