- 您現在的位置：買賣IC網 > Datasheet目錄44 > MIC2086-MBQS TR (Micrel Inc)IC CTRLR HOW SWAP SGL 20-QSOP Datasheet資料下載
參數資料
| 型號： | MIC2086-MBQS TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 25/29頁 |
| 文件大小： | 1008K |
| 描述： | IC CTRLR HOW SWAP SGL 20-QSOP |
| 標準包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應用： | 通用型 Infiniband? |
| 內部開關： | 無 |
| 電源電壓： | 2.3 V ~ 16.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 20-QSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2086-MBQSTR MIC2086-MBQSTR-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當前第25頁第26頁第27頁第28頁第29頁
Micrel, Inc.
MIC2085/2086
May 2006
25
M9999-050406
(408) 955-1690
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, but
its not a hard calculation to perform, and tends to
converge quickly.
Then the starting (steady-state) T
J
is:
T
J
E T
A(MAX)
+ TJ
E T
A(MAX)
+ [R
ON
+ (T
A(MAX)
T
A
)(0.005/癈)
(R
ON
)] x I
2
x R
?J-A)
T
J
E 55癈 + [17m& + (55癈-25癈)(0.005)
(17m&)] x (2.5A)
2
x (50癈/W)
T
J
E (55癈 + (0.122W)(50癈/W)
E 61.1癈
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癈-25癈)(0.005)(17m&)]
x (2.5A)
2
x (50癈/W)
T
J
E ( 55癈 + (0.125W)(50癈/W)
E 61.27癈
So our original approximation of 61.1癈 was very close
to the correct value. We will use TJ = 61癈.
Finally, add (11.25W)(50癈/W)(0.08) = 45癈 to the
steady-state T
J
to get T
J(TRANSIENT MAX.)
= 106癈. This is
an acceptable maximum junction temperature for this
part.
Figure 12. Transient Thermal Impedance
相關PDF資料 |
PDF描述 |
|---|---|
| MIC2225-4OYMT TR | IC REG DL BUCK/LINEAR 10TMLF |
| MIC2310-2ZTS TR | IC HOT SWAP CTLR 2CHAN 24TSSOP |
| MIC2341-2YTQ | IC HOT PLUG CTLR DUAL PCI 48TQFP |
| MIC2569YQS TR | IC POWER SWITCH CABLECARD 16QSOP |
| MIC2583R-MBQS TR | IC CTRLR HOT SWAP 200MV 16-QSOP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2086-XBQS | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Single Channel Hot Swap Controllers |
| MIC2090 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Current Limiting Power Distribution Switches |
| MIC2090_11 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Current Limiting Power Distribution Switches |
| MIC2090-1YM5 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Current Limiting Power Distribution Switches |
| MIC2090-1YM5 TR | 功能描述:電源開關 IC - USB 50mA Current Limiting Power Distribution Switch RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
發布緊急采購，3分鐘左右您將得到回復。