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參數(shù)資料
| 型號(hào)： | PQ7RV4 |
| 廠商： | Sharp Corporation |
| 英文描述： | Variable Output (1.5 to 7V), 4.6A Output Low Power-loss Voltage Regulator |
| 中文描述： | 可變輸出（1.5至7V），4.6輸出低功率損耗的電壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 4/5頁(yè) |
| 文件大?。?/td> | 39K |
| 代理商： | PQ7RV4 |
Low Power-Loss Voltage Regulators
PQ7RV4
G
2
G
3
G
1
G
4
L
C
ref
390
to5k
R
1
R
2
C
O
+
V
O
D
1
C
IN
V
IN
+
I
Asjustment of Output Voltage
Output voltage is able to set (1.5V to 7V) when resistors R
1
,R
2
are attached to
,
￡
,
￠
terminals. As for the external
resistors to set output voltage, refer to the following figure.
I
ON/OFF Operation
I
Standard Connection
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 si 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
and C
O
is 0.33
μ
F and 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
=Vref
X
(1+R
2
/R
1
)
(Vref is 1.25V TYP)
The standard value of R
1
is 2k
. But value up to 390
to 5k
does not cause any trouble.
+
-
V
ref
2
4
3
R
2
R
1
V
O
V
O
=V
ref
X
(1+R
2
/R
1
)
=1.25
X
(1+R
2
/2000)
(R
1
=2k
,V
ref
=1.25V)
V
C
High : Output OFF
Low : Output ON
G
2
G
3
G
1
G
4
D
2
R
3
R
1
R
2
C
O
+
V
O
R
L
V
ADJ
D
1
C
IN
V
IN
R
1
Equivalent Circuit
in OFF-state
R
2
R
L
D
2
V
O
’
V
ADJ
R
D
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PQ7RV4_01 | 制造商:SHARP 制造商全稱(chēng):Sharp Electrionic Components 功能描述:Variable Output(1.5 to 7V), 4.6A Output Low Power-loss Voltage Regulator |
| PQ7RV4J0000H | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5V to 7.0V 4A 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| PQ7VZ5 | 制造商:SHARP 制造商全稱(chēng):Sharp Electrionic Components 功能描述:Variable Output, Compact Surface Mount Type Low Power-Loss Voltage Regulators |
| PQ7VZ5U | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:VOLT REGULATOR|ADJUSTABLE|+1.5 TO +7V|BIPOLAR|SIP|5PIN|PLASTIC |
| PQ8020 | 制造商:SEEQ 功能描述:ENCODER/DECODER, 20 Pin, Plastic, DIP |
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