Low Power-Loss Voltage Regulators
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
Fig.3 Power Dissipation vs. Ambient
Temperature (PQ30RV1/PQ30RV11)
Fig.4 Power Dissipation vs. Ambient
Temperature (PQ30RV2/PQ30RV21)
PD1 :No heat sink
20
P
D2 :With infinite heat sink
P
P
D1 :No heat sink
D2 :With infinite heat sink
20
15
10
5
P
D2
15
P
D2
10
5
P
D1
P
D1
0
-20
0
50
100
150
0
-20
0
50
100
150
Ambient temperature T
a
(˚C)
Ambient temperature T
a
(˚C)
Note) Oblique line portion:Overheat protection may operate
in this area.
Note) Oblique line portion:Overheat protection may operate
in this area.
Fig.5 Overcurrent Protection Characteristics
Fig.6 Overcurrent Protection Characteristics
(PQ30RV1/PQ30RV11)
(PQ30RV2/PQ30RV21)
100
100
80
60
40
80
60
40
20
0
20
0
0
0.5
1.0
1.5
2.0
0
1.0
2.0
3.0
(A)
4.0
Output current I
O
Output current IO (A)
Fig.8 Reference Voltage Deviation vs.
Fig.7 Output Voltage Adjustment
Characteristics
Junction Temperature
10
30
R1 390Ω
25
20
15
0
10
R
1
=390Ω,R
=0.5A(PQ30RV1/PQ30RV11)
= 1A(PQ30RV2/PQ30RV21)
2
=2.7kΩ,VIN=15V
5
0
101
I
O
IO
-10
-25
102
103
R2 (Ω)
104
105
0
25
50
75
100 125
(˚C)
Junction temperature T
j
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
