Page 1
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
PQ20VZ51/PQ20VZ11
Variable Output, Surface Mount Type Low Power-Loss Voltage Regulators
■ Features
¡Low power-loss (Dropout voltage : 0.5V)
¡Compact surface mount package
¡ Both the 0.5A output PQ20VZ51 and the 1A output
PQ20VZ11 have high-precision outputs (Reference voltage
precision : ±2.0%)
¡Variable output type (Output voltage variable range : 1.5V to
20V)
¡Built-in ON-OFF control function
¡Low dissipation current at OFF-state (Iqs : MAX.5µA)
¡Tape packaged type is available.
(φ330mm reel : 3 000pcs.,PQ20VZ5U/PQ20VZ1U)
■ Applications
¡Car audio equipment
¡VCR
■ Outline Dimensions
6.6MAX
5.2±0.5
20VZ51
9.7MAX
5.5±0.5
2.5MIN
13245
Internal connection diagram
1
Specific IC
2
5
0.5
4-(1.27)
3
4
3
+0.2
-0.1
(Unit : mm)
2.3±0.5
(0.5)
(0to0.25)
(0.9) (1.7)
(0.5)
IN
1 DC input (V
2 ON/OFF control
terminal (V
3 DC output (V
4 Output voltage minute
adjustment terminal (V
5 GND
Heat sink is common to 3 (VO).
)
C
)
O
)
ADJ
)
■ Absolute Maximum Ratings
*1
Input voltage
*1
Output contorol voltage
*1
Output adjustment terminal Voltage
Output current
Power dissipation (With infinite heat sink)
*2
Junction temperature
Operating temperature
Storage temperature
*3
Soldering temperature
*1
All are open except GND and applicable terminals.
*2
Overheat protection may operate at 125˚C=<T
*3
For 10s
“ 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
C
V
ADJ
PQ20VZ51
PQ20VZ11
j
=<150˚C
I
O
P
D
T
j
T
opr
T
stg
T
sol
-
-
260 (For 10s)
24
24
7
0.5
1
8
150
20 to +80
40 to +150
(Ta=25˚C)
V
V
V
A
W
˚C
˚C
˚C
˚C
· Please refer to the chapter“ Handling Precautions ”.
Page 2
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
■ Electrical Characteristics
Unless otherwise specified, VIN=12V, Vo=10V,*4, R1=1kΩ, Vc=2.7V(Ta=25˚C)
Parameter Symbol Conditions
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of reference voltage
Dropout voltage
Quiescent current
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
PQ20VZ51:Io=0.3A, PQ20VZ11:Io=0.5A
*5
PQ20VZ51:Io=5mA to 0.5A, PQ20VZ11: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 2, output voltage turns off.
V
V
RegL
R
RR
V
TCV
Vi-
I
VC(ON)
C(ON
I
C(OFF
V
C(OFF
I
I
Fig.1 Test Circuit
O
=1.5V
V
i
2
=225Ω to 14.6kΩ
R
O
*5
VIN=11 to 21V, IO=5mA
eg
I
Refer to Fig. 2
*4
ref
Tj=0 to 125˚C, Io=5mA
ref
*4,*6
O
IO=0
q
)
O
=0
I
)
)
C
=0.4V
V
qs
Fig.2 Test Circuit of Ripple Rejection
4.5
1.5
-
-
45
1.225
-
-
-
-
-
2.0
-
-
-
-
-
-
-
0.2
0.2
60
1.25
±1.0
0.2
4
-
-
-
-
-
-
20
2.0
2.5
-
1.275
-
0.5
7
-
200
0.8
2.0
5.0
V
V
%
%
dB
V
%
V
mA
V
µA
V
µA
µA
UnitMAX.TYP.MIN.
VIN
0.33µF
VC
V
[R
●2
●5
A
A
O=V
ref
X 1+- 1.25 X 1+
1=1kΩ,V
ref
1.25V]
=
●3●1
●4
Iq1kΩ
R2
R1
VO
47µF
R2
R1
V
R2
-
=
R1
IO
A
+
V
RL
0.33µF
e
i
~
V
IN
●2 ●4
VC
●3●1
●5
1kΩ
f=120Hz (sine wave)
i
=0.5V
rms
e
IO=0.3A
RR=20 log (e
i/eo
R2
47µF
R1
)
47µF
+
+
IO
e
o
V
~
RL
Page 3
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
Fig.3 Power Dissipation vs. Ambient
Temperature
10
(W)
D
5
Power dissipation P
0
-20 0
Note) Oblique line portion : Overheat protection may
operate in this area.
With infinite heat sink
P
D
20 40 60 80 100
Ambient temperature Ta (˚C)
Fig.5 Output Voltage Adjustment
Characteristics
20
R
1=1kΩ
15
(V)
O
10
Output voltage V
5
0
0.1 1 10010
R
2
(kΩ)
Fig.7 Output Voltage vs. Input Voltage
(PQ20VZ51)
1
=1kΩ ,R2=7kΩ
16
14
(V)
O
12
10
Output voltage V
R
V
C
=2.7V , Ci=0.33µF , C0=47µF
j
=25˚C
T
L
=∞
R
R
L
8
=40Ω
6
4
2
0
0246 101214168
Input voltage V
RL=20Ω
IN
(V)
Fig.4 Overcurrent Protection
Characteristics (Typical Value)
100
80
PQ20VZ51
60
PQ20VZ11
40
20
Relative output voltage (%)
0
0.5 1.0 1.5 2.0
Output current IO (A)
Fig.6 Reference Voltage Deviation
vs. Junction Temperature
IN
=12V , IO=5mA , VC=2.7V
V
R
1
=1kΩ,R2=7kΩ
C
i
=0.33µF , C0=47µF
25 50 75 100 125
(mV)
ref
-1
-2
-3
-4
-5
-6
-7
-8
-9
Reference voltage deviation ∆V
6
5
4
3
2
1
0
-25 0
Junction temperature Tj (˚C)
Fig.8 Output Voltage vs. Input Voltage
(PQ20VZ11)
R
1
16
14
(V)
12
O
10
8
6
Output voltage V
4
2
0
=1kΩ ,R2=7kΩ
V
C
=2.7V , Ci=0.33µF , C0=47µF
j
=25˚C
T
RL=∞
L
=20Ω
R
0246 101214168
Input voltage V
RL=10Ω
IN
(V)
Page 4
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
Fig.9 Dropout Voltage vs. Junction
Temperature (PQ20VZ51)
0.30
(V)
0.25
-O
i
0.20
0.15
0.10
Dropout voltage V
IO=0.5A
IO=0.4A
IO=0.3A
IO=0.2A
IO=0.1A
0.05
0
-20 0 20 40 60 80 100 120
Junction temperature Tj (˚C)
Fig.11 Quiescent Current vs. Junction
Temperature
5
4
3
2
1
Quiescent current Iq (mA)
0
0 25 50 75 100 125-20
Junction temperature Tj (˚C)
V
IN=12V
O=0A
I
VC=2.7V
Fig.13 Ripple Rejection vs. Output Current
(PQ20VZ51)
100
90
80
70
60
50
40
30
Ripple rejection RR (dB)
20
10
Tj=25˚C
IN
=12V
V
R
1
=1kΩ
R
2
=7kΩ
i
=0.5V
rms
e
f=120Hz (sine wave)
Fig.10 Dropout Voltage vs. Junction
Temperature (PQ20VZ11)
0.40
(V)
-O
i
0.35
0.30
0.25
I
O
=1.0A
O
=0.75A
I
0.20
I
O
=0.5A
0.15
Dropout voltage V
0.10
O
=0.25A
I
0.05
-20 0 20 40 60 80 100 120
Junction temperature Tj (˚C)
Fig.12 Ripple Rejection vs. Input Ripple
Frequency
65
60
PQ20VZ11
55
50
PQ20VZ51
45
40
Ripple rejection RR (dB)
35
30
Tj=25˚C
V
IN
=12V
1
=1kΩ
R
R
2
=7kΩ
I
O
=0.3A
e
i
=0.5V
rms
RR=20log (e
(sine wave)
i/e0
)
0.1 1 10 100
Input ripple frequency f (kHz)
Fig.14 Ripple Rejection vs. Output Current
(PQ20VZ11)
100
90
80
70
60
50
40
30
Ripple rejection RR (dB)
20
10
Tj=25˚C
V
IN
=12V
1
=1kΩ
R
R
2
=7kΩ
i
=0.5V
rms
e
f=120Hz(sine wave)
0 0.1 0.2 0.3 0.4 0.5
O
Output current I
(A)
0 1.00.5
Output current I
O
(A)
Page 5
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
Fig.15 Output Peak Current vs. Dropout
Voltage (PQ20VZ51)
1.7
j
=25˚C
T
1.6
(A)
OP
1.5
1.4
1.3
1.2
OP
:Output current when
1.1
Output peak current I
1
I
output voltage is 95%
in comparison with
the initial value
012345678910
Dropout voltage V
i
-O
(V)
Fig.17 Output Peak Current vs. Junction
Temperature (PQ20VZ51)
(A)
OP
1.5
1.4
1.3
1.2
VIN-VO=2V
1V
Fig.16 Output Peak Current vs. Dropout
Voltage (PQ20VZ11)
2.5
j
=25˚C
T
2.4
(A)
2.3
OP
2.2
2.1
2.0
1.9
I
OP
1.8
Output peak current I
1.7
1.6
:Output current when
output voltage is 95%
in comparison with
the initial value
012345678910
Dropout voltage V
i
-O
(V)
Fig.18 Output Peak Current vs. Junction
Temperature (PQ20VZ11)
(A)
OP
2.0
VIN-VO=2V
1V
1.1
IOP:Output current when
1.0
Output peak current I
output voltage is 95%
in comparison with
0.9
the initial value
0.5V
0 25 50 75 100 125-20
Junction temperature Tj (˚C)
Fig.19 Power Dissipation vs. Ambient
Temperature
3
Cu area 740mm
2
Cu area 180mm
Cu area 100mm
Cu area 70mm
1
Cu area 36mm
Power dissipation PD (W)
0
-20 0
Ambient temperature Ta (˚C)
2
2
2
2
2
20 40 60 80 100
1.5
OP
:Output current when
I
Output peak current I
output voltage is 95%
in comparison with
the initial value
0 25 50 75 100 125-20
Junction temperature Tj (˚C)
PWB
PWB
Cu
Material : Glass-cloth epoxy resin
Size : 50X50X1.6mm
Cu thickness : 35µm
3
0.5V
Page 6
Low Power-Loss Voltage Regulators PQ20VZ51/PQ20VZ11
■ Adjustment of Output Voltage
Output voltage is able to be set from 1.5V to 20V when resistors R1,R2 are attached to£,¢,∞
terminals. As for the external resistors to set output voltage, refer to the following figure or Fig.5.
V
3
+
V
ref
4
5
■ ON/OFF Operation
As shown in the figure,ON/OFF control function is available.
DC input
VIN
●1
●3
2
●
●5
CO
O
V
+
Load
2
R
R
1
O
VO=V
ref
X(1+R2/R1)
=1.25X(1+R
1
=1kΩ,V
(R
2
/1000)
ref
= 1.25V)
ON/OFF
signal
High : Output ON
Low or Open : Output OFF
■ Model Line-ups for Tape-packaged Products
Sleeve-packaged products
Output current
output
0.5A
output
1.0A
Standard type
-
-
High-precision output type
PQ20VZ51
PQ20VZ11
Tape-packaged products
Standard type
-
-
High-precision output type
PQ20VZ5U
PQ20VZ1U
Loading...