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參數(shù)資料
| 型號： | IRU1160CP |
| 廠商： | International Rectifier |
| 英文描述： | 6A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR |
| 中文描述： | 6A條超低壓差型正，可調(diào)式穩(wěn)壓器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 57K |
| 代理商： | IRU1160CP |
IRU1160
5
Rev. 1.4
08/20/02
www.irf.com
V
OUT
= 2.8V
V
IN
= 3.3V
V
CTRL
= 5V
I
OUT
= 3A (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
θ
JA
(
°
C/W) Max Pd Max Pd
Area
(
T
A
=25
°
C
) (
T
A
=45
°
C
)
TO-263 1.4"X1.4" 25
TO-263 1.0"X1.0" 30
TO-263 0.7"X0.7" 35
TO-263 Pad Size 45
4.4W
3.7W
3.1W
2.4W
3.6W
3.0W
2.6W
2.0W
Note:
Above table is based on the maximum junction
temperature of 135
8
C.
P
D
= 1
×
(3.3 - 2.8)+
×
(5 - 2.8) = 1.61W
P
D
= I
OUT
×
(V
IN
- V
OUT
)+
×
(V
CTRL
- V
OUT
)
3
60
(
)
I
OUT
60
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TAC Fax: (310) 252-7903
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Data and specifications subject to change without notice. 02/01
Stability
The IRU1160 requires the use of an output capacitor as
part of the frequency compensation in order to make the
regulator stable. Typical designs for the microproces-
sor applications use standard electrolytic capacitors with
typical ESR in the range of 50 to 100m
and an output
capacitance of 500 to 1000
μ
F. Fortunately as the ca-
pacitance increases, the ESR decreases resulting in a
fixed RC time constant. The IRU1160 takes advantage
of this phenomena in making the overall regulator loop
stable.
For most applications a minimum of 100
μ
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 IRU1160 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
8
C, 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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| IRU1160CPTR | 功能描述:IC REG LDO ADJ 6A 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:3.3V 輸入電壓:4.7 V ~ 15 V 電壓 - 壓降（標準）:1.2V @ 800mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:800mA（最小值） 電流 - 限制（最?。?800mA 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-252-3，DPak（2 引線+接片），SC-63 供應(yīng)商設(shè)備封裝:PowerFlex/TO-252 包裝:剪切帶 (CT) 其它名稱:296-31967-1 |
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