Low Power-Loss Voltage Regulators
Fig.23 Dropout Voltage vs. Junction
Temperature (PQ05RD08 Series)
0.5 Input voltage is the value when output voltage is
95% in comparison with the intial value
0.4
IO=0.75A
0.3
0.5A
0.2
0.25A
0.1
0
–25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.25 Quiescent Current vs. Junction
Temperature (PQ05RD08 Series)
5
4
3
2
1
0
–25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.27 Ripple Rejection vs. Input Ripple
Frequency (PQ05RD08 Series)
100
80
PQ05RD08
60 PQ09RD08
PQ12RD08
40 IO=0.5A,ei=0.5Vrms,
VIN=7V(PQ05RD08)
VIN=11V(PQ09RD08)
20 VIN=14V(PQ12RD08)
0.1
1
10
100
Input ripple frequency f (kHz)
118
PQ05RD08 Series/PQ3RD083/PQ6RD083
Fig.24 Dropout Voltage vs. Junction
Temperature (PQ3RD083/PQ6RD083)
0.6 Input voltage is the value when output voltage is
95% in comparison with the intial value
0.5
IO=0.8A
0.4
0.6A
0.3
0.2
0.1
0
–25
0.4A
0.2A
PQ3RD083
PQ6RD083
0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.26 Quiescent Current vs. Junction
Temperature (PQ3RD083/PQ6RD083)
4.7
4.2
3.7
PQ6RD083
PQ3RD083
3.2
2.7 IO=0A
VIN=8V(PQ6RD083)
2.2 VIN=5V(PQ3RD083)
–25 0 25 50 75
100 125
Junction temperature Tj (˚C)
Fig.28 Ripple Rejection vs. Output Current
(PQ05RD08 Series)
90
PQ05RD08
80
PQ09RD08
70
PQ12RD08
60
f=120Hz,ei=0.5Vrms,
50 VIN= 7V(PQ05RD08 Series)
VIN= 11V(PQ09RD08 Series)
40 VIN= 14V(PQ12RD08 Series)
0
0.5
1.0
Output current IO (A)