Sharp PQ7RV4 Datasheet
Low Power-Loss Voltage Regulators PQ7RV4
PQ7RV4
Variable Output (1.5 to 7V), 4.6A Output Low Power-loss Voltage Regulator
■ Features
¡Low power-loss
(Dropout voltage : MAX.0.5V at Io=4.0A)
(Dropout voltage : MAX.1.0V at Io=4.6A)
¡TO-220 package
¡1.5V to 7V/4.6A output type
¡Low operating voltage (Minimum operating voltage:3.0V)
¡High-precision reference voltage type
Reference voltage precision : ±2.0%
¡Built-in ON/OFF control function
¡Built-in overcurrent protection, overheat protection function
■ Applications
¡Power supplies for various electronic equipment such as personal
computers
■ Outline Dimensions
10.2MAX
7.4±0.2
PQ7RV4
29.1MAX
13.5MIN
●1 ●2 ●3 ●4
Internal connection diagram
1
Control circuit
3
φ3.2±0.1
4-1.4
4-0.6
3-(2.54)
2
4
3.6±0.2
+0.3
-0
+0.2
-0.1
(Unit : mm)
4.5±0.2
2.8±0.2
4.8MAX
15.6±0.5
(1.5)
(0.5)
1 DC input (VIN)
2 DC output (V
3 GND
4 Output adjustment
terminal (V
O)
ADJ)
■ Absolute Maximum Ratings
*1
Input voltage
*1
ON/OFF control terminal voltage
Output current
*2
Power dissipation
*3
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
*1
All are open except GND and applicable terminals.
*2
P
D1
: No heat sink, PD2: With infinite heat sink
*3
Overheat protection may operate at 125=<T
“ 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. ”
Parameter Symbol Rating Unit
V
IN
V
ADJ
I
O
P
D1
P
D2
T
j
T
opr
-20 to +80
T
stg
-40 to +150
T
sol
260 (For 10s)
j
=<150˚C.
(Ta=25˚C)
10
5
4.6
1.8
18
150
V
V
A
W
˚C
˚C
˚C
˚C
· Please refer to the chapter“ Handling Precautions ”.
Low Power-Loss Voltage Regulators PQ7RV4
■ Electrical Characteristics
(Unless otherwise specified, conditions shall be VIN=5V,VO=3.3V(R1=2kΩ),Io=2.0A,Ta=25˚C)
Parameter Symbol Conditions
Input voltage
Output voltage
Load regulation
Line regulation
Reference voltage
Temperature coefficient of reference voltage
Ripple rejection
Dropout voltage(1)
Dropout voltage(2)
Quiescent current
*4
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
V
RegL
R
V
TCV
RR
V
Vi-
V
eg
i-O(1)
I
IN
O
I
ref
ref
O(2)
q
O
=5mA to 4.6A
I
IN
=4 to 10V
V
j
=0 to125˚C
T
*4
, IO=4.0A
*4
, IO=4.6A
O
=0A
I
Fig.1 Test Circuit
V
IN
0.33µF
●2●1
R
2
●4
●3
R
A
Iq2kΩ
V
1
ref
V
47µF
+
V
O
O
I
A
R
V
=1.25
V
[R
L
Fig.2 Test circuit for Ripple Rejection
e
i
~
V
IN
0.33µF
●2●1
R
2
●4
●3
2kΩ
47µF
R
1
+
f=120Hz (sine wave)
I
O
+
R
e
VO=3V
e
o
V
V
~
I
L
RR=20 log (e
-
-
-
-
o
=V
ref X
(1+R2/R1)
X
(1+R2/R1)
1
=2kΩ,Vre=1.25V]
i
=0.5V
rms
IN
=5V (R1=2kΩ)
O
=0.5A
i/eo
7.0
2.0
2.5
0.5
1.0
17
UnitMAX.TYP.
V
V
%
%
V
%/˚C
dB
-
V
V
mA
MIN.
3.0
1.5
-
-
1.225
-
45
-
-
-
)
-
-
0.5
0.5
1.25
±0.01
55
-
-
-
10.0
1.275
Fig.3 Power Dissipation vs. Ambient
Temperature
20
P
D2
15
(W)
D
10
PD1 :No heat sink
P
D2
:With infinite heat sink
5
Power dissipation P
P
D1
0
-20 0
Ambient temperature Ta (˚C)
Note) Oblique line portion:Overheat protection may operate
in this area.
20 40 60 80
Fig.4 Reference Voltage Deviation vs.
Junction Temperature
5
V
IN
=5V
4
O
=3.3V
V
(mV)
O
1
=2kΩ
R
3
O
=2A
I
2
1
0
-1
-2
-3
-4
Reference voltage deviation ∆V
-5
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
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