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參數(shù)資料
| 型號： | IRU1150CPPBF |
| 元件分類： | 可調(diào)正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 1.25 V-5.5 V ADJUSTABLE POSITIVE LDO REGULATOR, 1.15 V DROPOUT, PSSO5 |
| 封裝： | PLASTIC, ULTRA THIN PACKAGE-5 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大小： | 138K |
| 代理商： | IRU1150CPPBF |
IRU1150(PbF)
5
Rev. 1.8
www.irf.com
VOUT = 2.7V
VIN = 3.3V
VCTRL = 5V
IOUT = 2A (DC Avg)
Assuming, the following conditions:
Calculate the maximum power dissipation using the fol-
lowing equation:
Using table below select the proper package and the
amount of copper board needed.
Pkg
Copper
θJA(°C/W)
Max Pd
Area
(TA=25°C)
(TA=45°C)
TO-263 1.4"X1.4"
25
4.4W
3.6W
TO-263 1.0"X1.0"
30
3.7W
3.0W
TO-263 0.7"X0.7"
35
3.1W
2.6W
TO-263 Pad Size
45
2.4W
2.0W
SO-8
1.0"X1.0"
55
2.0W
1.63W
Note: Above table is based on the maximum junction
temperature of 135
8C.
As shown in the above table, any of the two packages
will do the job. For low cost applications the SOIC 8-pin
package is recommended.
PD = 2
3(3.3 - 2.7)+
3(5 - 2.7) = 1.28W
PD = IOUT
3(VIN - VOUT)+
3(VCTRL - VOUT)
2
60
( )
IOUT
60
( )
Stability
The IRU1150 requires the use of an output capacitor as
part of the frequency compensation in order to make the
regulator stable. Typical designs for the microprocessor
applications use standard electrolytic capacitors with
typical ESR in the range of 50 to 100m
and an output
capacitance of 500 to 1000
F. Fortunately as the ca-
pacitance increases, the ESR decreases resulting in a
fixed RC time constant. The IRU1150 takes advantage
of this phenomena in making the overall regulator loop
stable.
For most applications a minimum of 100
F aluminum
electrolytic capacitor such as Sanyo, MVGX series,
Panasonic FA series as well as the Nichicon PL series
insures both stability and good transient response.
Thermal Design
The IRU1150 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 tempera-
tures in the range of 150
8C, it is recommended that the
selected heat sink be chosen such that during maxi-
mum continuous load operation the junction tempera-
ture is kept below this number. The example below
shows the steps in selecting the proper surface mount
package.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRU1150CPTR | 功能描述:IC REG LDO ADJ 4A 5-UTHINPAK RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| IRU1150CS | 制造商:IRF 制造商全稱:International Rectifier 功能描述:4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR |
| IRU1150CSTR | 功能描述:IC REG LDO ADJ 4A 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| IRU1150CSTRPBF | 功能描述:IC REG LDO ADJ 4A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:500 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:12V 輸入電壓:14.5 V ~ 35 V 電壓 - 壓降（標準）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:500mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-205AD，TO-39-3 金屬罐 供應(yīng)商設(shè)備封裝:TO-39 包裝:散裝 其它名稱:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| IRU1160 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:6A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR |
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