Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
s
Features
q
Low power-loss
(Dropout voltage : MAX. 0.5V)
q
Surface mount package (equivalent to SC-63)
q
Variable output voltage (3.0 to 20V)
q
Output current (0.5A :
PQ20WZ51
)
(1.0A :
PQ20WZ11
)
q
Reference voltage precision : 2.5%
q
Built-in ON/OFF control function
q
Low dissipation current at OFF-state (Iqs : MAX. 5
A)
q
Built-in overcurrent, overheat protection functions, ASO
protection circuit
q
Available tape-packaged products
(330mm reel : 3 000 pcs.,
PQ20WZ5U/1U
)
s
Applications
q
Personal computers
q
CD-ROM drives
q
Power supplies for various OA equipment
s
Outline Dimensions
(Unit : mm)
Variable Output, General Purpose, Surface Mount Type Low Power-Loss Voltage Regulator
Please refer to the chapter " Handling Precautions ".
PQ20WZ51/PQ20WZ11
s
Absolute Maximum Ratings
( )
( )
DC output Vo
( )
Vo
( )
Vc
GND
DC input V
IN
1
2
3
3
1
2
3
4
5
5
4
Internal connection diagram
ON/OFF control terminal
Heat sink is common to terminal
Output voltage adjustment terminal
Specific IC
(
)
V
ADJ
Model No.
0.5
0.2
0.1
Epoxy resin
0.5
1.7
0.5
0.9
5.2 0.5
9.7
MAX.
5.5
0.5
2.5
MIN.
2.3 0.5
4
1.27
6.6 MAX.
(
)
(
)
()
()
(
)
3
1
2
3
4
5
Parameter
Symbol
Rating
Unit
V
IN
Vc
V
ADJ
Io
P
D
T
j
T
opr
T
stg
T
sol
24
24
5
V
V
V
A
W
C
C
C
C
1
1
1
2
3
1
All are open except GND and applicable terminals.
2
Overheat protection may operate at 125<=Tj<=150C
3
For 10s
(T
a
=25C)
Input voltage
ON/OFF control terminal voltage
Output adjustment terminal voltage
Output current
Power dissipation(with infinite heat sink)
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
PQ20WZ11
PQ20WZ51
0.5
1.0
8
150
20 to +80
40 to +150
260
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://sharp-world.com/ecg/
Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
s
Electrical Characteristics
Fig. 1 Test Circuit
Fig. 2 Test Circuit for Ripple Rejection
Fig. 4 Overcurrent Protection
Characteristics (Typical Value)
(PQ20WZ51)
Fig. 3 Power Dissipation vs. Ambient
Temperature
Parameter
Symbol
Conditions
V
IN
Vo
R
eg
L
R
eg
I
RR
V
ref
VcV
ref
V
i
-o
I
q
Vc(
ON
)
Ic(
ON
)
Vc(
OFF
)
Ic(
OFF
)
I
qs
Unit
MAX.
TYP.
MIN.
3.5
3.0
45
2.574
2.0
5
V
IN
=4 to 10V, Io=5mA
Refer to Fig. 2
4
T
j
=0 to 125C, Io=5mA
4, 6
Io=0A
Io=0A
Io=0A, Vc=0.4V
Io=0A, Vc=0.4V
60
2.64
1.0
24
20
2.0
2.5
2.706
0.5
8
200
0.8
2.0
5.0
4
PQ20WZ51
:Io=0.3A,
PQ20WZ11
:Io=0.5A
5
PQ20WZ51
:Io=5mA to 0.5A,
PQ20WZ11
:Io=5mA to 1.0A
6
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
7
In case of opening control terminal , output voltage turns off.
(Unless otherwise specified, conditions shall be V
IN
=5V, Vo=3.3V,
4
,R
1
=2k
, R
2
=500
, Vc=2.7V, T
a
=25C)
V
V
%
%
dB
V
%
V
mA
V
A
V
A
A
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
2
0
20
0
P
D
P
D
:With infinite heat sink
80
50
100
150
5
10
8
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
0
0.5
1.0
1.5
2.0
4
3
2
1
0
Output voltage V
O
(V)
Output current I
O
(A)
V
i
O
=2V
V
i
O
=3V
V
i
O
=0.5V
V
O
=3.3V
V
i
O
=1V
A
A
V
V
A
V
IN
V
C
I
q
V
ref
I
C
2k
I
O
V
O
R
L
47
F
0.33
F
+
R
2
R
1
V
O
=V
ref
X 1+
R
2
R
1
[R
1
=2k
,Vref Nearly =2.64V]
1
2
3
4
5
V
C
47
F
V
IN
ei
2.7V
eo
2k
I
O
R
L
0.33
F
+
R
2
R
1
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
=2k
)
1
2
3
4
5
V
Note) Oblique line portion : Overheat protection may operate in this area.
Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
Fig. 5 Overcurrent Protection
Characteristics (Typical Value)
(PQ20WZ11)
Fig. 6 Output Voltage Adjustment
Characteristics
0
0.5
1.0
1.5
2.0
4
3
2
1
0
Output voltage V
O
(V)
Output current I
O
(A)
V
i
O
=2V
V
i
O
=3V
V
i
O
=0.5V
V
O
=3.3V
V
i
O
=1V
R
2
(k
)
Output voltage V
O
(V)
0.1
1
100
10
R
1
=2k
0
5
10
15
20
Fig. 7 Reference Voltage Deviation vs.
Junction Temperature (Typical Value)
Fig. 8 Output Voltage vs. Input Voltage
(PQ20WZ51)
Fig. 9 Output Voltage vs. Input Voltage
(PQ20WZ11)
Fig.10 Dropout Voltage vs. Junction
Temperature (PQ20WZ51)
0
25
50
75
100
125
15
20
25
5
5
15
10
0
10
20
V
IN
=7V
V
O
=3.3V(R
1
=2k
,R
2
=0.5k
)
I
O
=0.3A (
PQ20WZ51
)
=0.5A (
PQ20WZ11
)
25
Reference voltage deviation
V
ref
(mV)
Junction temperature T
j
(C)
25
PQ20WZ51
PQ20WZ11
Output voltage V
O
(V)
Input voltage V
IN
(V)
0
1
2
3
5
6
7
8
4
R
L
=6.6
R
L
=
1
0
2
5
6
7
3
4
8
R
L
=11
V
C
=2.7V , C
i
=0.33
F , C
0
=47
F
T
j
=25C
R
1
=2k
,R
2
=0.5k
Output voltage V
O
(V)
Input voltage V
IN
(V)
0
1
2
3
5
6
7
8
4
R
L
=3.3
R
L
=
1
0
2
5
6
7
3
4
8
R
L
=6.6
V
C
=2.7V , C
i
=0.33
F , C
0
=47
F
T
j
=25C
R
1
=2k
,R
2
=0.5k
Junction temperature T
j
(C)
Dropout voltage V
i
O
(V)
25
0
25
50
75
100
125
0.14
0.13
0.12
0.11
0.1
0.15
0.16
0.17
0.18
0.19
0.2
V
IN
=3.135V, Vc=2.7V, R
1
=2k
, R
2
=500
, I
O
=0.3A
Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
Fig.11 Dropout Voltage vs. Junction
Temperature (PQ20WZ11)
Fig.12 Quiescent Current vs. Junction
Temperature
Fig.13 Ripple Rejection vs. Input Ripple
Frequency
Fig.14 Ripple Rejection vs. Output Current
(PQ20WZ51)
Fig.15 Ripple Rejection vs. Output Current
(PQ20WZ11)
Junction temperature T
j
(C)
Dropout voltage V
i
O
(V)
25
0
25
50
75
100
125
0.11
0.1
0.12
0.13
0.14
0.15
0.16
0.17
0.18
V
IN
=3.135V, Vc=2.7V, R
1
=2k
, R
2
=500
, I
O
=0.5A
Junction temperature T
j
(C)
Quiescent current I
q
(mA)
0
25
50
75
100
125
25
0
1
2
3
4
5
V
IN
=5V
I
O
=0A
V
C
=2.7V
R
1
=2k
R
2
=500
T
j
=25C
RR=20 log(e
i(rms)
/e
o(rms)
)
I
O
=0.3A
e
i(rms)
=0.5V
(sine wave)
V
IN
=5V
R
1
=2k
R
2
=0.5k
Ripple rejection RR (dB)
Input ripple frequency f
(kHz)
0.1
1
10
100
45
40
50
55
60
65
70
75
80
PQ20WZ11
PQ20WZ51
T
j
=25C
e
i(rms)
=0.5V
f=120Hz (sine wave)
V
IN
=5V
R
1
=2k
R
2
=0.5k
Output current I
O
(A)
Ripple rejection RR (dB)
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
45
40
50
55
60
65
70
75
80
T
j
=25C
e
i(rms)
=0.5V
f=120Hz (sine wave)
V
IN
=5V
R
1
=2k
R
2
=0.5k
Output current I
O
(A)
Ripple rejection RR (dB)
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
45
40
50
55
60
65
70
75
80
Fig.16 Circuit Operating Current vs. Input
Voltage (PQ20WZ51)
0
1
2
3
4
5
6
20
15
10
5
0
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
R
L
=6.6
R
L
=11
R
L
=
Vc=2.7V,
R
1
=2k
, R
2
=500
(Vo=3.3V)
Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
Fig.17 Circuit Operating Current vs. Input
Voltage (PQ20WZ11)
0
1
2
3
4
5
6
7
8
20
25
30
15
10
5
0
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
R
L
=3.3
R
L
=6.6
R
L
=
Vc=2.7V,
R
1
=2k
, R
2
=500
(Vo=3.3V)
s
Typical Application
2k
V
O
C
O
DC input
Cin
ON/OFF signal
High : Output ON
Low or Open : Output OFF
+
R
2
R
1
V
IN
1
4
3
Load
2
5
s
Model Line-ups for Tape-packaged Products
PQ20WZ11
PQ20WZ1U
0.5A output
Output current
Sleeve-packaged products
High-precision output type
Tape-packaged products
High-precision output type
PQ20WZ51
1.0A output
PQ20WZ5U
Fig.18 Power Dissipation vs. Ambient
Temperature
Cu area 740mm
2
Cu area 180mm
2
Cu area 100mm
2
Cu area 70mm
2
Cu area 36mm
2
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
20
0
0
1
2
3
20
40
60
80
100
PWB
Material : Glass-cloth epoxy resin
Size : 50 X 50 X 1.6mm
Cu thickness : 35
m
PWB
Cu
NOTICE
q
The 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.
q
Contact 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.
q
Observe 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).
q
Contact 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.
q
If 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.
q
This 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.
q
Contact and consult with a SHARP representative if there are any questions about the contents of this publication.
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