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參數(shù)資料
| 型號： | MIC2007YML |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Adjustable Current Limit Power Distribution Switch |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO6 |
| 封裝： | 2 X 2 MM, LEAD FREE, MLF-6 |
| 文件頁數(shù)： | 16/25頁 |
| 文件大?。?/td> | 410K |
| 代理商： | MIC2007YML |
Micrel, Inc.
MIC20XX Family
January 2009
23
M9999-012109-A
Power Dissipation
Power dissipation depends on several factors such as
the load, PCB layout, ambient temperature, and supply
voltage. Calculation of power dissipation can be
accomplished by the following equation:
()2
OUT
DS(ON)
D
I
R
P
×
=
To relate this to junction temperature, the following
equation can be used:
A
A)
-
(J
D
J
T
R
P
T
+
×
=
θ
Where: TJ = junction temperature,
TA = ambient temperature
Rθ(J-A) is the thermal resistance of the package
In normal operation the switch’s Ron is low enough that
no significant I
2R heating occurs. Device heating is most
often caused by a short circuit, or very heavy load, when
a significant portion of the input supply voltage appears
across the switch’s power MOSFET. Under these
conditions the heat generated will exceed the package
and PCB’s ability to cool the device and thermal limiting
will be invoked.
In Figure 11 die temperature is plotted against IOUT
assuming a constant case temperature of 85°C. The
plots also assume a worst case RON of 140m at a die
temperature of 135°C. Under these conditions it is clear
that an SOT-23 packaged device will be on the verge of
thermal shutdown, typically 140°C die temperature,
when operating at a load current of 1.25A. For this
reason we recommend using MLF
packaged switch s
for any design intending to supply continuous currents of
1A or more.
0
20
40
60
80
100
120
140
160
0.2
OUTPUT CURRENT (A)
Die Temperature vs.
Output Current (TCASE=85°C)
SOT-23
0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
MLF
Figure 11. Die Temperature vs. IOUT
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2007YML TR | 功能描述:電源開關 IC - USB Programmable Current Limit Single High-Side Switch wCslew + LdDschg - Lead Free 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 |
| MIC2007YMLH10 | 制造商:Micrel 功能描述:The Micrel MIC2007YMLH10 is a Adjustable Power Switching IC. |
| MIC2007YML-TR | 功能描述:IC DISTRIBUTION SW ADJ 6-MLF 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 開關類型:通用 輸出數(shù):1 比率 - 輸入:輸出:1:1 輸出配置:高端 輸出類型:P 通道 接口:開/關 電壓 - 負載:2.5 V ~ 5.5 V 電壓 - 電源（Vcc/Vdd）:不需要 電流 - 輸出（最大值）:2A 導通電阻（典型值）:70 毫歐 輸入類型:非反相 特性:負載釋放，壓擺率受控型 故障保護:限流（可調(diào)），超溫 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:6-VQFN 裸露焊盤，6-MLF? 供應商器件封裝:6-MLF?（2x2） 標準包裝:1 |
| MIC2008YM6 | 功能描述:IC DISTRIBUTION SW ADJ SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產(chǎn)品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數(shù):2 Rds（開）:140 毫歐 內(nèi)部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| MIC2008YM6 TR | 功能描述:電源開關 IC - USB Programmable Current Limit Single High-Side Switch w/Cslew - Lead Free 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 |
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