PQ05RF1 Series
Low Power-Loss Voltage Regulators
Fig.19 Ripple Rejection vs. Input Ripple Frequency
(PQ05RF1/PQ05RF11/PQ09RF1/PQ09RF11/PQ12RF1/PQ12RF11)
Fig.20 Ripple Rejection vs. Input Ripple Frequency
(PQ05RF1V/PQ09RF1V/PQ12RF1V)
80
70
60
50
40
80
70
60
50
40
30
30
IO=0.5A,ei=0.5Vrms,
Cref=3.3µF
VIN= 7V(PQ05RF1V)
VIN= 15V(PQ09RF1V)
20
10
0
20
I
O
=0.5A,e =0.5Vrms,
i
V
V
V
IN=7V(PQ05RF11/PQ05RF11)
IN=15V(PQ09RF11/PQ09RF11)
IN=18V(PQ12RF11/PQ12RF11)
10
VIN= 18V(PQ12RF1V)
0
0.1
1
10
100
0.1
1
10
100
Input ripple frequency f (kHz)
Input ripple frequency f (kHz)
Fig.21 Ripple Rejection vs. Output Current
80
70
PQ05RF1V/PQ09RF1V/PQ12RF1V
PQ05RF1/PQ05RF11
PQ09RF1/PQ09RF11
PQ12RF1/PQ12RF11
60
50
f=120Hz,ei=0.5Vrms,
Cref=3.3µF(V Type)
40
VIN= 7V(PQ05RF1 Series)
VIN= 15V(PQ09RF1 Series)
VIN= 18V(PQ12RF1 Series)
30
0
0.5
1.0
Output current I (A)
O
■ Typical Application
PQ05RF1/PQ05RF11 Series
PQ05RF1V Series
V
IN
V
IN
V
O
V
+
O
1●
2●
3●
1●
2●
4●
3●
+
+
+
+
R
2
'
R2
Specific IC
C
O
CO
Specific IC
C
ref
R1
'
R
1
4●
ON/OFF
signal
High or Open:Output ON
Low :Output OFF
R
R
2
'XR
=Vref X 1 + --------------------- ¡ ---------------------
'+R 'XR
2
R1'+R1
VO
CMOS or TTL
2
2
R
1
1
Vref =1.26V,R1' = 390Ω
PQ05RF1V : R
PQ09RF1V : R
PQ12RF1V : R
2
2
2
' = 1.16kΩ
' = 2.40kΩ
' = 3.32kΩ
(Note) R1' and R2' are built in a specific IC.
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
