Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
Fig.11 Output Voltage Deviation vs. Junction
Fig.12 Output Voltage vs. Input
Voltage (PQ3RD23)
Temperature (PQ12RD21)
8
7
6
5
4
3
2
250
V
IN=18V
=0.5A
200
150
100
50
I
O
R
L
=∞Ω
0
–50
R =3.3Ω
L
–100
–150
–200
R
L
=1.65Ω
1
0
0
2
4
6
8
10
–25
0
25
50
75
100 125
j (˚C)
Input voltage VIN (V)
Junction temperature T
Fig.13 Output Voltage vs. Input
Fig.14 Output Voltage vs. Input
Voltage (PQ05RD21)
Voltage (PQ09RD21)
10
8
7
6
RL=∞Ω
RL=9Ω
5
RL=∞Ω
R
L
=4.5Ω
RL=2.5Ω
5
0
4
3
RL=5Ω
2
1
0
0
2
4
6
8
10
0
5
10
15
Input voltage VIN (V)
Input voltage VIN (V)
Fig.15 Output Voltage vs. Input
Fig.16 Circuit Operating Current vs. Input
Voltage (PQ12RD21)
Voltage (PQ3RD23)
80
20
15
60
40
R =∞Ω
L
10
5
R
L
=12Ω
RL=3.3Ω
RL
=6Ω
RL=1.65Ω
20
0
R
L=∞Ω
0
0
5
10
15
20
25
0
5
10
Input voltage VIN (V)
Input voltage VIN (V)
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
