PQ30RV21 SHARP [Sharp Electrionic Components], PQ30RV21 Datasheet - Page 6

• Manufacturer Part Number: PQ30RV21
• Description: Variable Output Low Power-Loss Voltage Regulators
• Manufacturer: SHARP [Sharp Electrionic Components]

Low Power-Loss Voltage Regulators
D
C
C
R
ref
IN
1
1
, R
, C
Fig.21 Output Peak Current vs. Junction
Standard Connection
2
O
: Be sure to mount the devices C
: This device is necessary to protect the element from damage when reverse voltage may be applied to the regulator in case of
: This device is necessary when it is required to enhance the ripple rejection or to delay the output start-up time(*1).
: These devices are necessary to set the output voltage. The output voltage V
input short-circuiting.
(*1)Otherwise, it is not necessary.
(Care must be taken since C
(*1)The output start-up time is proportional to C
The standard specification of C
V
(V
5
4
3
2
The standard value of R
-20
O
ref
V
=V
I
is 95% in comparison with the initial value
Temperature (PQ30RV2/PQ30RV21)
OP
IN
R
is 1.25V TYP)
:Output current when output voltage
1
ref
=390 ,R
0
Junction temperature T
X (1+R
C
25
IN
2
2
/R
=2.7k
1
1
)
V
2V
IN
50
D
3
-V
1
1
is 390 .But value up 10k does not cause any trouble.
O
0.5V
=5V
ref
2
4
75
may raise the gain, facilitating oscillation.)
IN
IN
R
R
2
and C
1
and C
j
(˚C)
100
390
to10k
O
O
+
C
is 0.33 F and 47 F, respectively. However, ajust them as necessary after checking.
as close to the device terminal as possible so as to prevent oscillation.
ref
125
+
C
O
re f
X R
2
.
V
O
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
O
is given by the following formula: