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参数资料
| 型号： | MIC2086-LBQS TR |
| 厂商： | Micrel Inc |
| 文件页数： | 26/29页 |
| 文件大小： | 1008K |
| 描述： | IC CTRLR HOW SWAP SGL 20-QSOP |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用型 Infiniband? |
| 内部开关： | 无 |
| 电源电压： | 2.3 V ~ 16.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2086-LBQSTR MIC2086-LBQSTR-ND |
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Micrel, Inc.
MIC2085/2086
May 2006
26
M9999-050406
(408) 955-1690
PCB Layout Considerations
Because of the low values of the sense resistors used
with theMIC2085/86 controllers, special attention to the
layout must be used in order for the devices circuit
breaker function to operate properly. Specifically, the
use of a 4-wire Kelvin connection to measure the voltage
across R
SENSE
is highly recommended. Kelvin sensing is
simply a means of making sure that any voltage drops in
the power traces connecting to the resistors does not get
picked up by the traces themselves. Additionally, these
Kelvin connections should be isolated from all other
signal traces to avoid introducing noise onto these
sensitive nodes. Figure 13 illustrates a recommended,
multi-layer layout for the R
SENSE
, Power MOSFET,
timer(s), overvoltage and feedback network connections.
The feed-back and overvoltage resistive networks are
selected for a12V application (from Figure 5). Many hot
swap applications will require load currents of several
amperes. Therefore, the power (VCC and Return) trace
widths (W) need to be wide enough to allow the current
to flow while the rise in temperature for a given copper
plate (e.g., 1 oz. or 2 oz.) is kept to a maximum of 10癈
~ 25癈. Also, these traces should be as short as
possible in order to minimize the IR drops between the
input and the load. For a starting point, there are many
trace width calculation tools available on the web such
as the following link:
http://www.aracnet.com/cgi-usr/gpatrick/trace.pl
Finally, plated-through vias are utilized to make circuit
connections to the power and ground planes. The trace
connections with indicated vias should follow the
example shown for the GND pin connection in Figure 13.
Figure 13. Recommended PCB Layout for Sense Resistor, Power MOSFET,
and Feedback/Overvoltage Network
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| MIC2086-MBQS | 功能描述:IC CTRLR HOW SWAP SGL 20-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| MIC2086-MBQS TR | 功能描述:IC CTRLR HOW SWAP SGL 20-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| MIC2086-XBQS | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Single Channel Hot Swap Controllers |
| MIC2090 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Current Limiting Power Distribution Switches |
| MIC2090_11 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Current Limiting Power Distribution Switches |
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