參數(shù)資料
型號(hào)： AP1184K533LA
英文描述： 4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
中文描述： 第4A超低壓差積極可調(diào)或固定模式調(diào)節(jié)
文件頁(yè)數(shù)： 8/11頁(yè)
文件大?。?/td> 236K
代理商： AP1184K533LA
4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
AP1184
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Sep 7, 2004
6/11
Functional Descriptions(Continued)
Thermal Design
The AP1184-XXX incorporates an internal thermal
shutdown that protects the device when the junction
temperature exceeds the allowable maximum
junction temperature. Although this device can
operate with junction temperatures in the range of
150
oC, it is recommended that the selected heat
sink be chosen such that during maximum
continuous load operation, the junction temperature
is kept below this number. The example below
shows the steps in selecting the proper surface
mount package.
Assuming, the following conditions:
Vout=2.5V
Vin=3.3V
Vctrl=5V
Iout=2A DC Avg.
Calculate the maximum power dissipation using
the following equation:
Pd=Iout*(Vin-Vout)+(Iout/60)*(Vctrl-Vout)
Pd=2*(3.3-2.5)+(2/60)*(5-2.5)=1.68W
Using table below select the proper package
and the amount of copper board needed.
Package
Copper Area
θJA (
oC/W)
Max Pd (Ta=25
oC)
Max Pd (Ta=45
oC)
SOP7
1.0” X 1.0”
65
1.7W
1.4W
TO263
Pad Size-1.4”X1.4”
25-45
2.4W-4.4W
2.0W-3.6W
Note: Above table is based on the maximum junction temperature of 135
oC.
As shown in the above table, any of the two packages will do the job. For low cost applications the SOP7 package is
recommended.
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參數(shù)描述
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AP1184K533L-U 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR
AP1184K550 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
AP1184K550A 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
AP1184K550L 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
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