Variable Output Type Low Power-Loss Voltage Regulator with ON/OFF Control Function
s
q
Features
s
Outline Dimensions
10.2MAX
4.5
(Unit : mm)
Low power-loss
(Dropout voltage: MAX. 0.5V)
q
Compact resin full mold package
(Equivalent to TO-220)
q
With built-in ON/OFF control function
q
Variable output voltage (setting range: 3.0 to 20V)
q
0.5A output (PQ20RX05)
1.0A output (PQ20RX11)
q
Reference voltage precision: ±2.5%
q
With built-in overcurrent protection, overheat protection,
ASO protection circuit
ASO: Area of Safety Operation
2.8
7.4
±
0.2
φ
3.2
±
0.1
PQ20RX11
Epoxy resin
(1.5 )
0.8
4 –( 1.7 )
(5.0 ) 3.2
±
0.5
8.2
±
0.7
s
q
Applications
Power supplies for various electronic equipment such as
AV, OA equipment
q
CRT displays
1
2 3
4
5
Internal connection diagram
1
3
1
2
3
4
5
Specific IC
2
5
4
DC input (V
IN
)
ON/OFF control terminal( Vc )
DC output ( Vo )
Output voltage adjustment terminal( V
ADJ
)
GND
s
❇1
Absolute Maximum Ratings
Symbol
V
IN
V
c
V
ADJ
I
o
P
D1
P
D2
T
j
T
opr
T
stg
T
sol
Rating
24
24
7
0.5
1
1.5(PQ20RX11),1.25(PQ20RX05)
15(PQ20RX11),10(PQ20RX05)
150
–20 to +80
–40 to +150
260(for 10s)
(T
a
=25˚C)
Unit
V
V
V
A
W
˚C
˚C
˚C
˚C
Parameter
Input voltage
❇1
ON/OFF control terminal voltage
❇1
Output adjustment terminal voltage
PQ20RX05
Output current
PQ20RX11
❇2
❇3
Power dissipation
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
❇1
❇2
❇3
All are open except GND and applicable terminals.
P
D1
: No heat sink, P
D2
: With infinite heat sink
Overheat protection may operate at 125<=T
j
<=150˚C.
• Please refer to the chapter " Handling Precautions ".
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 device specification sheets before using any SHARP device.
Internet Internet address for Electronic Components Group http://sharp-world.com/ecg/
Notice
4.4MIN 5.0
±
0.5
( 0.5 )
16.4
±
0.7
(24.6)
Low Power-Loss Voltage Regulators
PQ20RX05/PQ20RX11
s
Electrical Characteristics
(Unless otherwise specified, V
IN
=5V, V
O
=3.3V,
❇4
, R
1
=2kΩ, R
2
=500Ω, V
C
=2.7V, T
a
=25˚C)
Symbol
V
IN
V
O
R
eg
L
R
eg
I
RR
V
ref
T
C
V
ref
V
i-O
I
q
V
C(ON)
I
C(ON)
V
C(OFF)
I
C(OFF)
I
qs
Conditions
––
––
❇5
Parameter
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of reference voltage
Dropout voltage
Quiescent current
❇7
ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Output OFF-state consumption current
❇4
❇5
❇6
V
IN
=4 to 10V, Io=5mA
Refer to Fig. 2
––
Tj=0 to 125˚C, Io=5mA
❇4
,
❇6
Io=0A
––
––
Io=0A
Io=0A, Vc=0.4V
Vc=0.4V
MIN.
3.5
3.0
––
––
45
2.574
––
––
––
2.0
––
––
––
––
TYP.
––
––
––
––
––
2.64
±1.0
––
––
––
––
––
––
––
MAX.
24
20
2.0
2.5
––
2.706
––
0.5
8
––
200
0.8
2.0
5.0
Unit
V
V
%
%
dB
V
%
V
mA
V
µA
V
µA
µA
PQ20RX05:
I
O
=0.3A,
PQ20RX11:
I
O
=0.5A
PQ20RX05:
I
O
=5mA to 0.5A,
PQ20RX11:
I
O
=5mA to 1.0A
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
❇7
In case of opening ON/OFF control terminal
2
, output voltage turns off.
Fig. 1 Test Circuit
V
IN
0.33µF
47µF
R
2
V
C
2
5
4
+
Fig. 2 Test Circuit of Ripple Rejection
V
O
1
0.33µF
3
1
47µF
3
+
A
I
O
R
2
e
i
V
IN
2
5
4
47µF
R
1
2kΩ
I
O
+
V
R
L
V
R
L
eo
A
A
I
q
2kΩ
R
1
V
2.7V
R
2
V
O
=V
ref x
1+ –––––
R
1
[R
1
=2kΩ,V
ref
Nearly=2.64V]
f
=120Hz(sine wave)
e
i(rms)
=0.5V
I
O
=0.3A
RR=20 log(e
i(rms)
/e
o(rms)
)
V
IN
=5V
V
O
=3.3V(R
1
=2kΩ)
Fig. 3 Power Dissipation vs. Ambient
Temperature (PQ20RX05)
20
P
D1
:No heat sink
P
D2
:With infinite heat sink
Power dissipation P
D
(W)
Fig. 4 Power Dissipation vs. Ambient
Temperature (PQ20RX11)
20
P
D1
:No heat sink
P
D2
:With infinite heat sink
Power dissipation P
D
(W)
15
15
P
D2
10
P
D2
10
5
P
D1
5
P
D1
0
–25
0
50
80 100
150
Ambient temperature T
a
(˚C)
Note) Oblique line portion : Overheat protection may operate in this area.
0
–20
0
50
80 100
150
Ambient temperature T
a
(˚C)
Note) Oblique line portion : Overheat protection may operate in this area.
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