Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
ꢀꢀꢀElectrical Characteristics
ꢀ
(Unless otherwise specified, Io=1.0A, ꢀ4, Ta=25˚C)
Symbol
VO
Conditions
Parameter
PQ3RD23
MIN.
3.201
4.85
8.73
11.64
––
––
––
––
45
TYP.
3.3
5.0
9.0
12.0
0.1
0.1
0.5
±0.02
55
MAX.
3.399
5.15
9.27
12.36
2.0
2.5
2.5
––
––
Unit
PQ05RD21
PQ09RD21
PQ12RD21
ꢀ4
Output voltage
V
Load regulation
Line regulation
Io=5mA to 2.0A, ꢀ4
ꢀ5, IO=5mA
%
%
RegL
RegI
PQ3RD23
PQ05RD21 series
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage
ꢀ7 ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
Tj=0 to 125˚C, Io=5mA
Refer to Fig.2
%/˚C
dB
V
TCVO
RR
Vi-O
VC(ON)
IC(ON)
VC(OFF)
IC(OFF)
Iq
ꢀ6, Io=2A
ꢀ4
––
––
0.5
––
––
––
––
2.0
––
––
––
––
V
µA
V
mA
mA
––
20
0.8
–0.4
10
VC=2.7V, ꢀ4
ꢀ4
VC=0.4V, ꢀ4
IO=0A, ꢀ4
––
ꢀ4
ꢀ5
ꢀ6
ꢀ7
PQ3RD23:VIN=5V, PQ05RD21:VIN =7V, PQ09RD21:VIN =11V, PQ12RD21: VIN =14V
PQ3RD23:VIN=4 to 10V, PQ05RD21:VIN = 6 to 12V, PQ09RD21:VIN =10 to 16V, PQ12RD21: VIN =13 to 19V
Input voltage shall be the value when output voltage is 95% in comparison with the initial value. PQ3RD23:VIN=3.7V
4
In case of opening control teminal , output voltage turns on.
Fig. 1 Test Circuit
Fig. 2 Test Circuit of Ripple Rejection
+
V
IN
47µF
VO
1
2
4
1
2
4
I
O
V
C
47µF
I
O
e
i
A
+
+
3
3
V
V
eo
A
RL
0.33µF
0.33µF
R
L
V
IN
A
I
q
I
C
f=120Hz (sine wave)
i(rms)=0.5V
e
V
IN=5V (PQ3RD23)
7V (PQ05RD21)
11V (PQ09RD21)
14V (PQ12RD21)
O=0.5A
I
RR=20 log (ei(rms)/eo(rms)
)
Fig. 3 Power Dissipation vs. Ambient
Temperature
Fig. 4 Overcurrent Protection
Characteristics (Typical Value)
(PQ3RD23)
12
11
10
9
8
7
6
5
4
20
P
P
D1 :No heat sink
D2 :With infinite heat sink
P
D2
15
10
5
Vi-O=1V
3
2
1
Vi-O=0.5V
Vi-O=3V
P
D1
V
i
-
O
=2V
4.0
0
0
1.0
2.0
3.0
–20
0
20
40
60
80
Output current I
O
(A)
Ambient temperature T
a
(˚C)
Note) Oblique line portion : Overheat protection may operate in this area.
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
