125
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
s
Features
q
Low power-loss(Dropout voltage: MAX 0.5V at Io=2.0A)
q
2.0A output type
q
Compact resin package(equivalent to TO-220)
q
Available 3.3V/5V/9V/12V output type
q
Output voltage precision: 3.0%
q
Built-in ON/OFF control function
q
Built in overcurrent, overheat protection functions, ASO
protection circuit.
q
Lead forming type is also available.
s
Applications
q
Power supplies for various electronic equipment such as
AV, OA equipment
s
Model Line-ups
s
Outline Dimensions
(Unit : mm)
2.0A Output Type Low Power-Loss Voltage Regulator
Please refer to the chapter " Handling Precautions ".
PQ05RD21 Series/PQ3RD23
PQ05RD21
Epoxy resin
0.5
1.5
4 1.4
0.3
0
0.2
0.1
4 0.6
10.2MAX.
7.4
0.2
29.1MAX.
2.8
0.2
4.5
0.2
3 2.54
3.6
0.2
3.2
0.1
4
1.4
15.6
0.5
4.8MAX.
13.5MIN.
Typical dimensions
(
)
( )
( )
( )
( )
( )
( )
( )
:
DC output Vo
GND
DC input V
IN
ON/OFF control terminal Vc
Specific IC
Internal connection diagram
1
1
1
2
2
2
3
3
3
4
4
4
5.0V output
9.0V output
12.0V output
3.3V output
2.0A output
PQ3RD23
PQ05RD21
PQ09RD21
PQ12RD21
Parameter
Symbol
Rating
Unit
V
IN
V
C
I
O
P
D1
P
D2
T
j
T
opr
T
stg
T
sol
20
20
2.0
1.4
15
150
20 to +80
40 to +150
260 (For 10s)
V
V
A
W
W
C
C
C
C
f1
f1
f2
f3
f1
All are open except GND and applicable terminals.
f2
P
D1
: No heat sink, P
D2
: With infinite heat sink
f3
Overheat protection may operate at 125<=T
j
<=150C.
(T
a
=25C)
Input voltage
ON/OFF control terminal voltage
Output current
Power dissipation
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
Notice
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://www.sharp.co.jp/ecg/
126
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
s
Electrical Characteristics
Fig. 1 Test Circuit
Fig. 2 Test Circuit of Ripple Rejection
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Output voltage
4.85
5.0
5.15
V
Load regulation
Io=5mA to 2.0A,
f4
0.1
2.0
%
Line regulation
f5
, I
O
=5mA
0.1
2.5
%
Temperature coefficient of output voltage
Tj=0 to 125C, Io=5mA
0.02
%/C
Ripple rejection
Refer to Fig.2
f4
f4
f4
45
55
dB
Dropout voltage
f6
, Io=2A
0.5
V
f7
ON-state voltage for control
2.0
V
OFF-state voltage for control
0.8
V
Quiescent current
I
O
=0A,
f4
10
mA
ON-state current for control
OFF-state current for control
V
C
=2.7V,
f4
V
C
=0.4V,
f4
mA
0.4
A
20
f4
PQ3RD23
:V
IN
=5V,
PQ05RD21
:V
IN
=7V,
PQ09RD21
:V
IN
=11V,
PQ12RD21
: V
IN
=14V
f5
PQ3RD23
:V
IN
=4 to 10V,
PQ05RD21
:V
IN
= 6 to 12V,
PQ09RD21
:V
IN
=10 to 16V,
PQ12RD21
: V
IN
=13 to 19V
f6
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
PQ3RD23
:V
IN
=3.7V
f7
In case of opening control teminal , output voltage turns on.
8.73
9.0
9.27
11.64
12.0
12.36
PQ05RD21
PQ09RD21
PQ12RD21
(Unless otherwise specified, Io=1.0A,
f4
, T
a
=25C)
PQ3RD23
3.201
3.3
3.399
0.5
2.5
PQ3RD23
PQ05RD21 series
V
O
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
4
A
V
A
A
V
IN
I
q
I
C
I
O
V
O
V
C
R
L
0.33
F
47
F
+
1
2
3
4
e
i
V
IN
I
O
e
o
R
L
0.33
F
47
F
+
+
f=120Hz (sine wave)
e
i
=0.5V
rms
V
IN
=5V (
PQ3RD23
)
7V (
PQ05RD21
)
11V (
PQ09RD21
)
14V (
PQ12RD21
)
I
O
=0.5A
RR=20 log (e
i
/e
o
)
1
2
3
4
V
Fig. 4 Overcurrent Protection
Characteristics (Typical Value)
(PQ3RD23)
Fig. 3 Power Dissipation vs. Ambient
Temperature
,,,
,,,
,,,
,,,
20
0
5
10
15
20
0
20
40
60
80
P
D2
P
D1
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
P
D1
:No heat sink
P
D2
:With infinite heat sink
Output voltage V
O
(V)
Output current I
O
(A)
0
1.0
3.0
4.0
2.0
1
2
3
4
7
8
9
5
6
10
11
12
V
i
-
O
=3V
V
i
-
O
=1V
V
i
-
O
=0.5V
V
i
-
O
=2V
Note) Oblique line portion : Overheat protection may operate in this area.
127
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
Fig. 5 Overcurrent Protection
Characteristics (Typical Value) (PQ05RD21)
Output voltage V
O
(V)
Output current I
O
(A)
0
1.0
3.0
4.0
2.0
1
2
3
4
7
8
9
5
6
10
11
12
V
i
-
O
=3V
V
i
-
O
=1V
V
i
-
O
=0.5V
V
i
-
O
=2V
Fig. 6 Overcurrent Protection
Characteristics (Typical Value) (PQ09RD21)
Output voltage V
O
(V)
Output current I
O
(A)
0
1.0
3.0
4.0
2.0
1
2
3
4
7
8
9
5
6
10
11
12
V
i
-
O
=3V
V
i
-
O
=1V
V
i
-
O
=0.5V
V
i
-
O
=2V
Fig. 7 Overcurrent Protection
Characteristics (Typical Value) (PQ12RD21)
Output voltage V
O
(V)
Output current I
O
(A)
0
1.0
3.0
4.0
2.0
1
2
3
4
7
8
9
5
6
10
11
12
V
i
-
O
=3V
V
i
-
O
=1V
V
i
-
O
=0.5V
V
i
-
O
=2V
Fig. 8 Output Voltage Deviation vs. Junction
Temperature (PQ3RD23)
V
IN
=5V
I
O
=0.5A
25
0
50
25
100
75
125
150
100
50
0
50
100
Output voltage deviation
V
O
(mV)
Junction temperature T
j
(C)
Fig. 9 Output Voltage Deviation vs. Junction
Temperature (PQ05RD21)
Fig.10 Output Voltage Deviation vs. Junction
Temperature (PQ09RD21)
V
IN
=
7V
I
O
=0.5A
25
0
50
25
100
75
125
150
100
50
0
50
100
Output voltage deviation
V
O
(mV)
Junction temperature T
j
(C)
V
IN
=11V
I
O
=0.5A
25
0
50
25
100
75
125
250
150
100
50
0
50
100
150
Output voltage deviation
V
O
(mV)
Junction temperature T
j
(C)
128
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
Fig.11 Output Voltage Deviation vs. Junction
Temperature (PQ12RD21)
Fig.12 Output Voltage vs. Input
Voltage (PQ3RD23)
Fig.13 Output Voltage vs. Input
Voltage (PQ05RD21)
Fig.14 Output Voltage vs. Input
Voltage (PQ09RD21)
Fig.15 Output Voltage vs. Input
Voltage (PQ12RD21)
Fig.16 Circuit Operating Current vs. Input
Voltage (PQ3RD23)
200
25
0
50
25
100
75
125
250
200
150
100
50
0
50
100
150
Output voltage deviation
V
O
(mV)
Junction temperature T
j
(C)
V
IN
=18V
I
O
=0.5A
0
0
2
6
4
8
10
8
7
6
5
4
3
2
1
Output voltage V
O
(V)
Input voltage V
IN
(V)
R
L
=
R
L
=3.3
R
L
=1.65
0
0
2
6
4
8
10
8
7
6
5
4
3
2
1
Output voltage V
O
(V)
Input voltage V
IN
(V)
R
L
=
R
L
=5
R
L
=2.5
0
0
5
10
15
5
10
Output voltage V
O
(V)
Input voltage V
IN
(V)
R
L
=
R
L
=9
R
L
=4.5
0
0
5
10
15
20
25
5
10
15
20
R
L
=12
R
L
=6
Output voltage V
O
(V)
Input voltage V
IN
(V)
R
L
=
0
0
5
10
20
40
60
R
L
=
R
L
=3.3
R
L
=1.65
80
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
129
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
Fig.17 Circuit Operating Current vs. Input
Voltage (PQ05RD21)
Fig.18 Circuit Operating Current vs. Input
Voltage (PQ09RD21)
Fig.19 Circuit Operating Current vs. Input
Voltage (PQ12RD21)
Fig.20 Dropout Voltage vs. Junction
Temperature
Fig.21 Quiescent Current vs. Junction
Temperature
Fig.22 Ripple Rejection vs. Input Ripple
Frequency
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)
PQ05RD21
PQ09RD21
PQ12RD21
PQ3RD23
0
25
0
25
50
75
100
125
2
4
6
8
I
O
=0A
10
Quiescent current I
q
(mA)
Junction temperature T
j
(C)
PQ05RD21
PQ12RD21 PQ09RD21
PQ3RD23
0
0.1
10
1
100
10
20
30
40
50
60
70
80
Ripple rejection RR (dB)
Input ripple frequency f
(kHz)
PQ12RD21
(V
IN
=14V)
PQ09RD21
(V
IN
=11V)
PQ3RD23
(V
IN
=5V)
PQ05RD21
(V
IN
=7V)
I
O
=0.5A, ei=0.5Vrms
0
0
5
10
20
40
60
R
L
=
R
L
=5
R
L
=2.5
80
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
0
0
10
15
5
20
40
60
R
L
=
R
L
=9
R
L
=4.5
80
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
0
0
5
10
15
20
25
20
40
60
R
L
=
R
L
=12
R
L
=6
80
Input voltage V
IN
(V)
Circuit operating current I
BIAS
(mA)
130
Low Power-Loss Voltage Regulators
PQ05RD21 Series/PQ3RD23
s
Typical Application
C
O
V
IN
Cin
+
Vo
Load
ON/OFF signal
High or Open: Output ON
Low : Output OFF
1
2
3
4
115
Application Circuits
NOTICE
qThe circuit application examples in this publication are provided to explain representative applications of
SHARP devices and are not intended to guarantee any circuit design or license any intellectual property
rights. SHARP takes no responsibility for any problems related to any intellectual property right of a
third party resulting from the use of SHARP's devices.
qContact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
SHARP reserves the right to make changes in the specifications, characteristics, data, materials,
structure, and other contents described herein at any time without notice in order to improve design or
reliability. Manufacturing locations are also subject to change without notice.
qObserve the following points when using any devices in this publication. SHARP takes no responsibility
for damage caused by improper use of the devices which does not meet the conditions and absolute
maximum ratings to be used specified in the relevant specification sheet nor meet the following
conditions:
(i) The devices in this publication are designed for use in general electronic equipment designs such as:
--- Personal computers
--- Office automation equipment
--- Telecommunication equipment [terminal]
--- Test and measurement equipment
--- Industrial control
--- Audio visual equipment
--- Consumer electronics
(ii)Measures such as fail-safe function and redundant design should be taken to ensure reliability and
safety when SHARP devices are used for or in connection with equipment that requires higher
reliability such as:
--- Transportation control and safety equipment (i.e., aircraft, trains, automobiles, etc.)
--- Traffic signals
--- Gas leakage sensor breakers
--- Alarm equipment
--- Various safety devices, etc.
(iii)SHARP devices shall not be used for or in connection with equipment that requires an extremely
high level of reliability and safety such as:
--- Space applications
--- Telecommunication equipment [trunk lines]
--- Nuclear power control equipment
--- Medical and other life support equipment (e.g., scuba).
qContact a SHARP representative in advance when intending to use SHARP devices for any "specific"
applications other than those recommended by SHARP or when it is unclear which category mentioned
above controls the intended use.
qIf the SHARP devices listed in this publication fall within the scope of strategic products described in the
Foreign Exchange and Foreign Trade Control Law of Japan, it is necessary to obtain approval to export
such SHARP devices.
qThis publication is the proprietary product of SHARP and is copyrighted, with all rights reserved. Under
the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any
means, electronic or mechanical, for any purpose, in whole or in part, without the express written
permission of SHARP. Express written permission is also required before any use of this publication
may be made by a third party.
qContact and consult with a SHARP representative if there are any questions about the contents of this
publication.
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