Low Power-Loss Voltage Regulators
Fig.17 Dropout Voltage vs. Junction
Temperature (PQ05RD11 Series)
0.5
0.4
0.3
0.2
0.1
0
–25
I
O
=1A
Quiescent current I
q
(mA)
PQ05RD11 Series/PQ3RD13
Fig.18 Quiescent Current vs. Junction
Temperature (PQ05RD11 Series)
10
Dropout voltage V
i
- O
(V)
8
6
I
O
=0.75A
I
O
=0.5A
I
O
=0.25A
4
2
0
–25
0
25
50
75
100
Junction temperature T
j
(˚C)
125
0
25
50
75
100
Junction temperature T
j
(˚C)
125
Fig.19 Ripple Rejection vs. Input Ripple
Frequency (PQ05RD11 Series)
100
I
O
=0.5A,e
i(rms)
=0.5V,
V
IN
=7V(PQ05RD11)
V
IN
=11V(PQ09RD11)
V
IN
=14V(PQ12RD11)
PQ05RD11
60
PQ12RD11
PQ09RD11
Fig.20 Ripple Rejection vs. Output Current
(PQ05RD11 Series)
90
PQ05RD11
Ripple rejection RR (dB)
Ripple rejection RR (dB)
80
80
70
60
f=120Hz,e
i(rms)
=0.5V,
50 V
IN
= 7V(PQ05RD1 Series)
V
IN
= 15V(PQ09RD1 Series)
V
IN
= 18V(PQ12RD1 Series)
40
0
0.5
Output current I
O
(A)
PQ12RD11
PQ09RD11
40
20
0.1
1
10
Input ripple frequency f (kHz)
100
1.0
Fig.21 Output Peak Current vs. Junction
Temperature
2.5
Vi
–O
=5V
s
Typical Application
DC input
1
2
4
3
Vo
+
C
O
Output peak current I
OP
(A)
2.0
2V
1V
1.5
0.5V
10V
ON/OFF signal
High or Open: Output ON
Low: Output OFF
1.0
–20
I
OP
:Output current when
output voltage is 95% in
comparison with the initial value
0
25
50
75
100
Junction temperature T
j
(˚C)
125
Load
V
IN
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
