Low Power-Loss Voltage Regulators
Fig.11 Circuit Operating Current vs. Input
Voltage (PQ05RA1/11)
40
PQ05RA1/PQ05RA11 Series
Fig.12 Circuit Operating Current vs. Input
Voltage (PQ09RA1/11)
40
20
RL=5Ω
RL=10Ω
RL=∞
0
0
5
10
Input voltage VIN (V)
Fig.13 Circuit Operating Current vs. Input
Voltage (PQ12RA1/11)
40
20
RL=12Ω
RL=24Ω
RL=∞
0
0
10
20
Input voltage VIN (V)
Fig.15 Quiescent Current vs. Junction
Temperature
10
VIN=35V
IO=0A
VC=2.7V
5
0
–25 0 25 50 75 100 125
Junction temperature Tj (˚C)
20
RL=9Ω
RL=18Ω
RL=∞
0
0
10
20
Input voltage VIN (V)
Fig.14 Dropout Voltage vs. Junction
Temperature
0.5
0.4
IO=1A
0.3
0.75A
0.2
0.5A
0.1
0
–25 0
0.25A
25 50 75 100 125
Junction temperature Tj (˚C)
Fig.16 Ripple Rejection vs. Input Ripple
Frequency
100
ei(rms)=0.5V VIN= 7V(PQ05RA1/11)
IO=0.5A
80
VIN=11V(PQ09RA1/11)
VIN=14V(PQ12RA1/11)
60
40
20
0
0.1
1
10
100
Input ripple frequency f (kHz)