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| 型号： | MIC281-0YM6 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 12/14页 |
| 文件大小： | 657K |
| 描述： | IC SUPERVISOR THERMAL SOT23-6 |
| 标准包装： | 1 |
| 系列： | IttyBitty® |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 外部 |
| 感应温度： | 外部传感器 |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 1083 (CN2011-ZH PDF) |
| 其它名称： | 576-2709-6 |
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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相关代理商/技术参数 |
参数描述 |
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| MIC2811-4GJLYML TR | 功能描述:直流/直流开关转换器 Single DC/DC + 3 LDOs w/ Low Noise Bypass RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2811-4GJLYML-TR | 功能描述:Handheld/Mobile Devices PMIC 16-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 应用:手持/移动设备 电流 - 电源:- 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商器件封装:16-MLF?（4x4） 标准包装:1 |
| MIC2811-4GMSYML TR | 功能描述:直流/直流开关转换器 Single DC/DC + 3 LDOs w/ Low Noise Bypass RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2811-4GMSYML-TR | 功能描述:Handheld/Mobile Devices PMIC 16-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 应用:手持/移动设备 电流 - 电源:- 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商器件封装:16-MLF?（4x4） 标准包装:1 |
| MIC281-1BM6 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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