Low Power-Loss Voltage Regulators
PQ3RF23/PQ3RF33
3.3V Output, High Output Current (2A, 3.5A) Type Low Power-loss Voltage Regulators
PQ3RF23/PQ3RF33
■ Features
¡3.3V output
¡High output current
2A type : PQ3RF23
3.5A type : PQ3RF33
¡Compact resin full-mold package (TO-220 package)
¡Low power-loss (Dropout voltage : MAX. 0.5V)
¡High-precision output voltage type
Output voltage precision : ±2.5%
¡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
PQ3RF23
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 (V
2 DC output (V
3 GND
4 ON/OFF control
terminal (V
IN)
O)
C)
■ Absolute Maximum Ratings
*1
Input voltage
*1
ON/OFF control terminal voltage
Output current
Power dissipation (No heat sink)
Power dissipation (With infinite heat sink)
*2
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
*1
All are open except GND and applicable terminals.
*2
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
j
=<150˚C.
IN
V
C
I
O
P
D1
P
D2
T
j
T
opr
T
stg
T
sol
10
10
PQ3RF23
PQ3RF33
PQ3RF23
PQ3RF33
18
150
-20 to +80
-40 to +150
260(For 10s.)
· Please refer to the chapter“ Handling Precautions ”.
3.5
1.5
1.8
a
=25˚C)
(T
V
V
2
A
W
W
˚C
˚C
˚C
˚C
Low Power-Loss Voltage Regulators
PQ3RF23/PQ3RF33
■ Electrical Characteristics
(Unless otherwise specified,conditions shall be IO=1.0A[PQ3RF23]/IO=1.5A[PQ3RF33],VIN=5V,Ta=25˚C)
Parameter Symbol Conditions
Output voltage
Load regulation
PQ3RF23
PQ3RF33
Line regulation
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage
*4
ON-state voltage for control
PQ3RF23
PQ3RF33
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
*3
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
*4
In case of opening control terminal 4,output voltage turns on.
RegL
T
V
I
V
I
O
V
eg
R
CVO
RR
V
i-O
C(ON)
C(ON)
C(OFF)
C(OFF)
I
q
I
O
=5mA to 2.0A
I
O
=5mA to 3.5A
I
IN
=4 to 10V
V
j
=0 to 125˚C
T
*3
, IO=2.0A
*3
, IO=3.0A
C
=2.7V
V
C
=0.4V
V
O
=0A
I
Fig.1 Test Circuit
V
IN
0.33µF
●2●1
V
C
●4
●3
A
A
I
q
I
C
47µF
+
V
O
I
O
A
V
R
L
-
-
-
-
3.218
-
-
-
-
45
-
2
-
-
-
-
3.3
0.2
0.2
0.5
±0.02
55
-
-
-
-
-
-
-
3.382
2
2
2.5
-
-
0.5
0.5
-
20
0.8
-0.4
10
Fig.2 Test Circuit of Ripple Rejection
●2●1
~
ei
0.33µF
V
IN
47µF
●4
●3
+
I
O
+
R
V
L
~
f=120Hz (sine wave)
i=0.5Vrms
e
eo
VIN=5V
O
I
RR=20 log (e
=0.5A
UnitMAX.TYP.MIN.
V
%
%
%/˚C
dB
V
V
µA
V
mA
mA
i/eo)
Fig.3 Power Dissipation vs. Ambient
Temperature (PQ3RF23)
20
18
(W)
15
D
10
5
Power dissipation P
1.5
0
-200 20406080
Note) Oblique line portion:Overheat protection may operate
in this area.
D2
P
P
D1
Ambient temperature Ta (˚C)
Fig.4 Power dissipation vs. Ambient
temperature (PQ3RF33)
20
18
(W)
15
D
10
5
Power dissipation P
1.8
0
-200 20406080
Note) Oblique line portion:Overheat protection may operate
in this area.
D2
P
P
D1
Ambient temperature Ta (˚C)
Low Power-Loss Voltage Regulators
PQ3RF23/PQ3RF33
Fig.5 Overcurrent Protection Characteristics Fig.6 Overcurrent Protection Characteristics
(PQ3RF33) (PQ3RF23)
4
Tj=25˚C
VIN=3.8V 4.3V 5V 7V 10V
4
VIN=3.8V 4.3V 5V 7V 10V
3
(V)
O
2
1
Output voltage V
0346721
5
3
(V)
O
2
1
Output voltage V
03467821
Output current IO (A)
Fig.7 Output Voltage Deviation vs.
Junction Temperature
(PQ3RF23) (PQ3RF33)
100
80
60
40
20
0
-20
-40
-60
-80
Output voltage deviation ∆VO (mV)
-100
-25 0 25 50 75 100 125
VIN=5V
IO=0A
Fig.8 Output Voltage Deviation vs.
Junction Temperature
100
80
(mV)
O
60
40
20
0
-20
-40
-60
-80
Output voltage deviation ∆V
-100
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.9 Output Voltage vs. Input Voltage
4
Tj=25˚C
Fig.10 Output Voltage vs. Input Voltage
(PQ3RF33) (PQ3RF23)
4
Output current IO (A)
5
Junction temperature T
T
j
=25˚C
VIN=5V
O
=0A
I
j (˚C)
Tj=25˚C
R
R
L=3.3Ω
L=∞
L=1.65Ω
R
(V)
3
O
2
Output voltage V
1
03467218
Input voltage V
5
IN
(V)
(V)
3
O
2
Output voltage V
1
R
L
=∞
R
L
=3.3Ω
03467218
Input voltage V
RL=1.65Ω
L
=0.94Ω
R
5
IN
(V)
Low Power-Loss Voltage Regulators
PQ3RF23/PQ3RF33
Fig.11 Circuit Operating Current vs. Input
Voltage
Fig.12 Circuit Operating Current vs. Input
Voltage
(PQ3RF23) (PQ3RF33)
T
j=25˚C
100
100
50
R
L=1.65Ω
R
L=3.3Ω
R
Circuit operating current IBIAS (mA)
0
12345678
Input voltage V
L=∞
IN (V)
Fig.13 Dropout Voltage vs. Junction
Temperature
(PQ3RF23) (PQ3RF33)
0.5
0.4
O=2.0A
I
Dropout voltage Vi-O (V)
0.3
0.2
0.1
IO=1.5A
IO=1.0A
IO=0.5A
(mA)
BIAS
50
Circuit operating current I
0
12345678
Fig.14 Dropout Voltage vs. Junction
Temperature
0.5
0.4
0.3
0.2
Dropout voltage Vi-O (V)
0.1
Input voltage V
O=3.5A
I
IO=3.0A
IO=2.0A
IO=1.0A
R
L
=3.3Ω
IN
j
=25˚C
T
L
=0.94Ω
R
RL=1.65Ω
R
L
=∞
(V)
0
-25 0
25 50 75 100 125
Junction temperature T
j (˚C)
Fig.15 Quiescent Current vs. Junction
Temperature
(PQ3RF23) (PQ3RF33)
5
4
(mA)
q
3
2
1
Quiescent current I
0
-25 0 25 50 75 100 125
Junction temperature T
VIN=5V
O
=0A
I
j
(˚C)
0
-25 0
Junction temperature T
Fig.16 Quiescent Current vs. Junction
Temperature
5
4
3
2
1
Quiescent current Iq (mA)
0
-25 0 25 50 75 100 125
Junction temperature T
25 50 75 100 125
j (˚C)
VIN=5V
O=0A
I
j (˚C)
Low Power-Loss Voltage Regulators
PQ3RF23/PQ3RF33
Fig.17 Ripple Rejection vs. Input Ripple
Frequency
(PQ3RF23) (PQ3RF33)
80
70
VIN=5V
IO=0.5A
ei=0.5V
rms
60
50
40
30
20
Ripple rejection RR (dB)
10
0
0.1 1 10 100
Input ripple frequency f
(kHz)
Fig.19 Ripple Rejection vs. Output Current
(PQ3RF23) (PQ3RF33)
80
70
60
50
V
IN=5V
ei=0.5Vrms
f=120Hz
Fig.18 Ripple Rejection vs. Input Ripple
Frequency
80
70
60
50
40
30
20
Ripple rejection RR (dB)
10
0
0.1 1 10 100
Input ripple frequency f
Fig.20 Ripple Rejection vs. Output Current
80
70
60
50
VIN=5V
IO=0.5A
ei=0.5V
rms
(kHz)
V
IN
=5V
ei=0.5Vrms
f=120Hz
Ripple rejection RR (dB)
40
0 0.5 1 1.5 2
Output current I
O (A)
Fig.21 Output Peak Current vs. Junction
Temperature
6.0
5.5
(A)
5.0
OP
4.5
4.0
3.5
3.0
IOP:Output current when
output voltage is 95%
Output peak current I
2.5
in comparison with
the initial value
2.0
-25 0
Junction temperature Tj (˚C)
V
IN
=10V
VIN=7V
VIN=5V
VIN=4.3V
VIN=3.8V
25 50 75 100 125
Ripple rejection RR (dB)
40
30
032.521.50.5
1
Output current I
O
(A)
Fig.22 Output Peak Current vs. Junction
Temperature
(PQ3RF33) (PQ3RF23)
8.0
7.5
7.0
(A)
OP
6.5
6.0
5.5
5.0
4.5
Output peak current I
4.0
-25 0
IOP:Output current when
output voltage is 95% in
comparison with the initial value
25 50 75 100 125
Junction temperature Tj (˚C)
V
IN
=10V
VIN=5V
VIN=4.3V
VIN=3.8V
VIN=7V
Low Power-Loss Voltage Regulators
■ Typical Application
V
DC input
0.33µF
●1
Specific IC
●2
4
●
●3
O
+
C
O
Load
PQ3RF23/PQ3RF33
ON/OFF Control
High or Open :output ON
Low :output OFF
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