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參數(shù)資料
| 型號： | PQ7DV5 |
| 廠商： | Sharp Corporation |
| 英文描述： | Variable Output Type, High Output Current (5A) Type Low Power-loss Voltage Regulators |
| 中文描述： | 可變輸出類型，高輸出電流（5A）條型低功率損耗穩(wěn)壓器 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 34K |
| 代理商： | PQ7DV5 |
Low Power-Loss Voltage Regulators
Fig.11 Ripple Rejection vs. Junction
Temperature
100
PQ7DV5
-25
0
50
25
100
75
125
80
40
60
20
0
R
Junction temperature T
j
(C)
V
IN
=5V
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
I
O
=0.5A,e
i
=0.5V
rms
f=120Hz
G
2
G
3
G
4
G
1
G
5
L
C
ref
2k
R
1
R
2
C
O
+
V
O
D
1
C
IN
V
IN
+
High or Open :Output ON
Low :Output OFF
ON/OFF
signal
D
1
: This device is necessary to protect the element from damage when reverse voltage may be applied to the regulator in case of
input short-circuiting.
C
ref
: This device is necessary when it is required to enhance the ripple rejection or to delay the output start-up time*. Otherwise, it
is not necessary.
(Care must be taken since C
ref
may raise the gain, facilitating oscillation.)
* The output start-up time proportional to C
ref
X
R
2
.
C
IN
, C
O
: Be sure to mount the devices C
IN
and C
O
as close to the device terminal as possible so as to prevent oscillation.
The standard specification of C
IN
= 0.33
μ
F ,C
O
= 47
μ
F, respectively. However, adjust them as necessary after checking.
R
1
, R
2
: These devices are necessary to set the output voltage. The output voltage V
O
is given by the following formula:
V
O
=V
ref
X
(1+R
2
/R
1
)
(V
ref
is 1.25V TYP)
The standard value of R
1
is 2
. But value up to 10k
.
I
Standard Connection
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PQ7DV5_01 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Variable Output Type, High Output Current(5A)Type Low Power-loss Voltage Regulators |
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