Low Power-Loss Voltage Regulators
PQ7DV10
s
Electrical Characteristics
(Unless otherwise specified, conditions shall be V
IN
=5V, Io=5A, Vo=3V(R
1
=2kΩ) T
a
=25˚C)
Symbol
V
IN
V
O
V
ref
R
eg
L
R
eg
I
T
C
V
O
RR
V
i
-o
V
C(ON)
I
C(ON)
V
C(OFF)
I
C(OFF)
I
q
Conditions
−
−
−
I
O
=5mA to 10A
V
IN
=4 to 10V
T
j
=0 to 125˚C
Refer to Fig. 2
V
IN
=3V, Io=10A
−
V
C
=2.7V
−
V
C
=0.4V
I
O
=0A
NIN.
3
1.5
1.225
−
−
−
45
−
2
−
−
−
−
TYP.
−
−
1.25
0.5
0.5
±0.01
55
−
−
−
−
−
−
MAX.
10
7
1.275
2
2.5
−
−
0.5
−
20
0.8
–40
17
Unit
V
V
V
%
%
%/˚C
dB
V
V
µA
V
mA
mA
Parameter
Input voltage
Reference voltage
Reference voltage
Load regulation
Line regulation
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage
❇3
ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
❇3
In case of opening control terminal
➃,output
voltage turns on.
Fig. 1 Test Circuit
Fig. 2 Test Circuit for Ripple Rejection
0.33µF
V
IN
0.33µF
1
2
47µF
R
2
V
ref
R
1
V
V
O
1
4
2
47µF
R
2
+
A
+
I
O
V
C
4
3
5
e
i
V
IN
I
O
+
V
R
L
3
5
V
ref
V
e
o
R
L
A
A
I
q
2kΩ
V
C
2.7V
R
1
2kΩ
f=120Hz(sine wave)
e
i(rms)
=0.5V
V
IN
=5V
V
O
=3V(R
1
=2kΩ)
I
O
=0.5A
RR=20 log(e
i(rms)
/e
o(rms)
)
V
o
=V
ref
✕(1+R
2
/R
1
)
[R
1
=2kΩ,V
ref
Nearly=1.25V]
Fig. 3 Power Dissipation vs. Ambient
Temperature
60
50
40
30
20
10
P
D1
0
–20
Note)
Fig. 4 Overcurrent Protection
Characteristics(Typical Value)
100
P
D2
Relative output voltage (%)
Power dissipation P
D
(W)
80
60
40
20
0
P
D1
: No heat sink
P
D2
: With infinite heat sink
0
20
40
60
Ambient temperature T
a
(˚C)
80
0
5
10
15
Output current I
O
(A)
20
Oblique line portion : Overheat protection may operate in this area.
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
