" In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices
shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device. "
Low Power-Loss Voltage Regulators
PQ7DV5
Variable Output Type, High Output Current (5A) Type Low Power-loss Voltage Regulators
s
Outline Dimensions
PQ7DV5
(Unit : mm)
s
Features
TO-3P package
Low power-loss (Dropout voltage:MAX. 0.5V at Io=5A)
Variable output type (1.5V to 7V)
Minimum input voltage : 3.0V
High output current type (5A)
Reference voltage precision :
2.0%
Built-in ON/OFF control function
Built-in overcurrent protection, overheat protection
function
s
Applications
Power supplies for various electronic equipment such as
personal computers
Parameter
Symbol
Rating
Unit
V
IN
V
C
V
ADJ
I
O
P
D1
P
D2
T
j
T
opr
T
stg
T
sol
10
10
5
5.0
2.2
60
150
-20 to +80
-40 to +150
260
(For 10s)
V
V
V
A
W
W
C
C
C
C
Input voltage
ON/OFF control terminal voltage
Output adjustment terminal voltage
Output current
Power dissipation (No heat sink)
Power dissipation (With infinite heat sink)
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
*1
*1
*1
*2
*1
All are open except GND and applicable terminals.
*2
Overheat protection may operate at 125=<T
j
=<150C.
s
Absolute Mximum Ratings
(T
a
=25C)
PQ7DV5
4.50.2
17.0MAX
2.00.2
1
2
3
4
5
6
39.0MAX
190.5
50.2
3.7MAX
17.0MIN
4-(2.54)
5-0.80.2
(0.6)
(1.4)
1
2
4
5
3
Reference
voltage
comparator
controller
1 DC input (V
IN
)
2,6 DC output (V
O
)
3 GND
4 ON/OFF control
terminal (V
C
)
5 Output voltage
minute
adjustment
terminal (V
ADJ
)
Internal connection diagram
Please refer to the chapter" Handling Precautions ".
Low Power-Loss Voltage Regulators
0
-20
0
P
D1
P
D2
P
D1
:No heat sink
P
D2
:With infinite heat sink
40
20
60
80
20
10
30
40
50
60
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
Fig.3
Power Dissipation vs. Ambient
Temperature
Fig.4
Overcurrent Protection
Characteristics (Typical Value)
Parameter
Symbol
Conditions
Input voltage
Output voltage
Reference voltage
Load regulation
Line regulation
Temperature coefficient of reference voltage
Ripple rejection
Dropout voltage
ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
Unit
MAX.
TYP.
NIN.
3
1.5
1.225
-
-
-
45
-
2.0
-
-
-
-
-
-
1.25
0.5
0.5
0.01
55
-
-
-
-
-
-
10
7
1.275
2.0
2.5
-
-
0.5
-
20
0.8
- 0.4
17
s
Electrical Characteristics
*3
In case of opening control terminal 4, output voltage turns on.
(Unless otherwise specified, conditions shall be V
IN
=5V, I
O
=2.5A, V
O
=3V [R
1
=2k
] T
a
=25C)
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
-
-
-
I
O
=5mA to 5.0A
V
IN
=4 to 10V
T
j
=0 to 125C
-
V
IN
=3V, I
O
=5A
-
V
C
=2.7V
-
V
C
=0.4V
I
o
=0A
V
V
V
%
%
%/C
dB
V
V
A
V
mA
mA
*3
Fig.1
Test Circuit
q
3
q
2
q
1
q
4
q
5
A
A
V
V
A
V
IN
V
C
I
q
2k
I
O
V
O
R
L
47
F
0.33
F
+
R
2
R
1
V
ref
Fig.2
Test Circuit for Ripple Rejection
~
V
~
V
C
2.7V
q
3
q
2
q
1
q
4
q
5
V
IN
e
i
e
o
2k
I
O
R
L
0.33
F
47
F
+
R
2
R
1
+
V
ref
V
o
=V
ref
X
(1+R
2
/R
1
)
=1.25
X
(1+R
2
/R
1
)
[R
1
=2k
,V
ref
=1.25V]
f=120Hz (sine wave)
e
i
=0.5V
rms
V
IN
=5V
V
O
=3V (R
1
=2k
)
I
O
=0.5A
RR=20 log (e
i
/e
o
)
0
2.0
4.0
6.0
8.0
10
12
100
80
40
60
20
0
Relative output voltage (%)
Output current I
O
(A)
PQ7DV5
Note) Oblique line portion:Overheat protection
may operate in this area.
Low Power-Loss Voltage Regulators
PQ7DV5
Fig.5
Reference Voltage Deviation vs.
Junction Temperature
Fig.6
Output Voltage vs. Input Voltage
Fig.7
Circuit Operating Current vs. Input
Voltage
Fig.9
Quiescent Current vs. Junction
Temperature
Fig.8
Dropout Voltage vs. Junction
Temperature
Fig.10 Ripple Rejection vs. Input Ripple
Frequency
-10
-25
0
25
50
75
100
125
-6
-2
2
6
-8
-4
0
4
8
V
IN
=5V
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
I
O
=2.5A
10
Reference voltage deviation
V
ref
(mV)
Junction temperature T
j
(C)
0
0
1
2
3
4
5
1
2
3
4
R
L
=
R
L
=1.2
R
L
=0.6
Output voltage V
O
(V)
Input voltage V
IN
(V)
T
a
=25C
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
0
0
5
2
4
1
3
100
R
L
=
R
L
=0.6
R
L
=1.2
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
T
a
=25C
V
O
=3V
(R
1
=2k
,
R
2
=2.8k
)
-25
0
50
25
100
75
125
0.5
0.4
0.2
0.3
0.1
0
Dropout voltage V
i
-O
(V)
Junction temperature T
j
(C)
V
IN
:0.95V
O
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
I
O
=5A
0
-25
0
25
50
75
100
125
2
10
12
4
14
6
16
8
18
V
IN
=5V
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
I
O
=0A
20
Quiescent current I
q
(mA)
Junction temperature T
j
(C)
0
0.1
10
1
100
20
40
60
100
80
Input ripple frequency f
(kHz)
V
IN
=5V
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
Io=0.5A,e
i
=0.5V
rms
,
T
a
=25C
Ripple rejection RR (dB)
Low Power-Loss Voltage Regulators
Fig.11 Ripple Rejection vs. Junction
Temperature
PQ7DV5
-25
0
50
25
100
75
125
100
80
40
60
20
0
Ripple rejection RR (dB)
Junction temperature T
j
(C)
V
IN
=5V
V
O
=3V(R
1
=2k
,R
2
=2.8k
)
I
O
=0.5A,e
i
=0.5V
rms
f=120Hz
q
2
q
3
q
4
q
1
q
5
Load
C
ref
2k
R
1
R
2
C
O
+
V
O
D
1
C
IN
V
IN
+
High or Open :Output ON
Low :Output OFF
ON/OFF
signal
D
1
: This device is necessary to protect the element from damage when reverse voltage may be applied to the regulator in case of
input short-circuiting.
C
ref
: This device is necessary when it is required to enhance the ripple rejection or to delay the output start-up time*. Otherwise, it
is not necessary.
(Care must be taken since C
ref
may raise the gain, facilitating oscillation.)
* The output start-up time proportional to C
ref
X
R
2
.
C
IN
, C
O
: Be sure to mount the devices C
IN
and C
O
as close to the device terminal as possible so as to prevent oscillation.
The standard specification of C
IN
= 0.33
F ,C
O
= 47
F, respectively. However, adjust them as necessary after checking.
R
1
, R
2
: These devices are necessary to set the output voltage. The output voltage V
O
is given by the following formula:
V
O
=V
ref
X
(1+R
2
/R
1
)
(V
ref
is 1.25V TYP)
The standard value of R
1
is 2
. But value up to 10k
.
s
Standard Connection
PDF 
ZIP