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