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參數資料
| 型號： | AP1184T5LA |
| 英文描述： | 4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
| 中文描述： | 第4A超低壓差積極可調或固定模式調節(jié) |
| 文件頁數： | 8/11頁 |
| 文件大?。?/td> | 236K |
| 代理商： | AP1184T5LA |
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| AP1184T5-L-U | 功能描述:低壓差穩(wěn)壓器 - LDO LDO BI 4.0A 0.7V 16-18V 1.25V ADJ RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| AP1184T5L-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 |
| AP1186 | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
| AP1186K5 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR |
| AP1186K515 | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
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