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参数资料
| 型号： | MIC2583R-MBQS TR |
| 厂商： | Micrel Inc |
| 文件页数： | 21/25页 |
| 文件大小： | 826K |
| 描述： | IC CTRLR HOT SWAP 200MV 16-QSOP |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 2.3 V ~ 13.2 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2583R-MBQSTR MIC2583R-MBQSTR-ND |
Micrel, Inc.
MIC2582/MIC2583
April 2009
21
M9999-043009-C
Thus:
Assume T
A
= 55?/SPAN>C maximum, 1 square inch of copper at
the drain leads, no airflow.
Recalling from our previous approximation hint, the part
has an R
ON
of (0.0335/2) = 17m& at 25癈.
Assume it has been carrying just about 2.5A for some
time.
When performing this calculation, be sure to use the
highest anticipated ambient temperature (T
A(MAX)
) in
which the MOSFET will be operating as the starting
temperature, and find the operating junction temperature
increase (T
J
) from that point. Then, as shown next, the
final junction temperature is found by adding T
A(MAX)
and
T
J
. Since this is not a closed-form equation, getting a
close approximation may take one or two iterations, and
the calculation tends to converge quickly.
Then the starting (steady-state) T
J
is:
T
J
E T
A(MAX)
+ T
J
E T
A(MAX)
+ [R
ON
+ T
A(MAX)
T
A
)(0.005/篊)(R
ON
)]
x I
2
x R
?JA)
T
J
E 55篊 + [17m& + (55篊-25篊)(0.005)(17m&)]
x (2.5A)
2
x (50篊/W)
T
J
E (55篊 + (0.122W)(50篊/W)
E 61.1篊
Iterate the calculation once to see if this value is within a
few percent of the expected final value. For this iteration
we will start with T
J
equal to the already calculated value
of 61.1癈:
T
J
E T
A
+ [17m& + (61.1篊-25篊)(0.005)(17m&)]
x (2.5A)
2
x (50篊/W)
T
J
E (55篊 + (0.125W)(50篊/W) E 61.27篊
So our original approximation of 61.1篊 was very close
to the correct value. We will use T
J
= 61篊.
Finally, add the temperature increase due to the
maximum power dissipation calculated from a single
event , (11.25W)(50篊/W)(0.08) = 45篊 to the steady-
state T
J
to get T
J(TRANSIENT MAX.)
= 106篊. This is an
acceptable maximum junction temperature for this part.
Figure 10. Transient Thermal Impedance
相关PDF资料 |
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|---|---|
| MIC2585-2MBTS TR | IC CTRLR HOT SWAP DUAL 24-TSSOP |
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| MIC2587R-2BM TR | IC CTRLR HOT SWAP POS HV 8-SOIC |
| MIC2590B-5BTQ TR | IC PCI HOT PLUG CTLR DUAL 48TQFP |
| MIC2591B-2BTQ TR | IC PCI HOT PLUG CTLR DUAL 48TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2583R-MYQS | 功能描述:热插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2583R-MYQS TR | 功能描述:热插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2584-JBTS | 功能描述:IC CTRLR HOT SWAP DUAL 16-TSSOP 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 |
| MIC2584-JBTS TR | 功能描述:IC CTRLR HOT SWAP DUAL 16-TSSOP 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 |
| MIC2584-JYTS | 功能描述:热插拔功率分布 Dual Channel Hot-Swap Controller - 100mV Threshold - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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