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Low Power-Loss Voltage Regulators
PQ3TZ50/PQ3TZ53
PQ3TZ50/PQ3TZ53
s
Outline Dimensions
(Unit : mm)
s
Features
Low power-loss (Dropout voltage : MAX. 0.5V)
Surface mount type package (equivalent to EIAJ SC-63)
Output current : MAX.0.5A
Low dissipation current at OFF-state (Iqs : MAX.5A)
Built-in ON/OFF cotrol function
Output voltage precision : 2.5%
Output voltage : (3.0V :
PQ3TZ50
)
(3.3V :
PQ3TZ53
)
Tape packaged type is also available. (Reel : 3 000pcs.)
s
Applications
Personal computers
Personal information tools (PDA)
Various OA equipment
3.0V/3.3V Output Surface Mount Type Low Power-Loss Voltage Regulators
Parameter
Symbol
Rating
Unit
V
IN
V
C
I
O
P
D
T
j
T
opr
T
stg
T
sol
10
10
0.5
8
150
-20 to +80
-40 to +150
260 (For 10s)
V
V
A
W
C
C
C
C
Input voltage
ON/OFF control terminal voltage
Output current
Power dissipation
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
*1
*1
*2
*3
*1
All are open except GND and applicable terminals.
*2
P
D
:With infinte heat sink.
*3
Overheat protection may operate at 125=<T
j
=<150C
s
Absolute Maximum Ratings
(T
a
=25C)
3TZ50
6.6MAX
9.7MAX
2.5MIN
5.20.5
2.30.5
5.50.5
(0.5)
(0.5)
(0.9)
(1.7)
3
0.5
+0.2
-0.1
4-(1.27)
1
3
2
4 5
3
5
1
2
(0to0.25)
1 DC input (V
IN
)
2 ON/OFF control terminal (V
C
)
3 DC output (V
C
)
4 NC
5 GND
Specific IC
Internal connection diagram
Heat sink is common to 3 (V
O
).
Please refer to the chapter" Handling Precautions ".
Low Power-Loss Voltage Regulators
PQ3TZ50/PQ3TZ53
100
80
40
60
20
0
Relative output voltage (%)
Output current I
O
(A)
0
0.5
1.0
1.5
2.0
V
i
-
o
=5V
V
i
-
o
=2V
V
i
-
o
=0.5V
T
a
=25C
V
i
-
o
=1V
Parameter
Symbol
Conditions
Input voltage
Output voltage
Load regulation
Line regulation
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage
ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
Output OFF-state consumption current
Unit
MAX.
TYP.
MIN.
3.4
3.7
2.925
3.218
-
-
-
45
-
2.0
-
-
-
-
-
-
-
3.0
3.3
0.2
0.1
0.01
60
-
-
-
-
-
-
-
10.0
10.0
3.075
3.382
2.0
2.5
-
-
0.5
-
200
0.8
2
10
5
s
Electrical Characteristics
*4
PQ3TZ50
:V
IN
=3.4V
PQ3TZ53
:V
IN
=3.7V
*5
In case of opening control terminal 2, output voltage turns off.
(V
C
=2.7V, T
a
=25C)
PQ3TZ50
PQ3TZ53
PQ3TZ50
PQ3TZ53
V
IN
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
I
qs
-
V
IN
=5V, I
O
=0.3A
V
IN
=5V, I
O
=5mA to 0.5A
V
IN
=4V to 10V, I
O
=5mA
V
IN
=5V, I
O
=5mA, T
j
=0 to125C
Refer to Fig. 2
*4
, I
O
=0.3A
V
IN
=5V, I
O
=0.3A,
*5
V
IN
=5V, I
O
=0.3A
V
IN
=5V
V
IN
=5V, I
O
=0.4V
V
IN
=5V, I
O
=0A
V
IN
=5V, V
C
=0.4V, I
O
=0.3A,
V
V
%
%
%/C
dB
V
V
A
V
A
mA
A
Fig.1
Test Circuit
Fig.3
Power Dissipation vs. Ambient
Temperature
Fig.4
Overcurrent Protection
Characteristics(Typical Value)
0
-20
0
P
D
P
D
:With infinite heat sink
80
50
100
150
5
10
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
Note) Oblique line portion:Overheat protection may
operate in this area.
Fig.2
Test Circuit for Ripple Rejection
q
5
q
3
q
1
q
2
A
V
A
A
V
IN
I
q
I
C
I
O
V
O
V
C
R
L
0.33
F
47
F
+
q
5
q
3
q
1
q
2
V
e
i
V
IN
2.7V
I
O
e
o
R
L
0.33
F
47
F
+
+
~
~
V
C
f=120Hz (sine wave)
e
i
=0.5V
rms
V
IN
=5V
I
O
=0.3A
RR=20 log (e
i
/e
o
)
Low Power-Loss Voltage Regulators
PQ3TZ50/PQ3TZ53
V
IN
=5V
I
O
=0.3A
-25
0
50
25
100
75
125
30
20
10
0
-10
-20
-30
Output voltage deviation
V
O
(mV)
Junction temperature T
j
(C)
0
0
1
2
3
4
6
5
10
20
30
R
L
=
R
L
=10
R
L
=6
T
a
=25C
40
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
Fig.5
Output Voltage Deviation vs.
Junction Temperature
Fig.6
Output Voltage vs. Input Voltage
Fig.7 Output Voltage vs. Input Voltage
Fig.9
Circuit Operating Current vs. Input
Voltage
Fig.8
Circuit Operating Current vs. Input
Voltage
Fig.10 Dropout Voltage vs. Junction
Temperature
(PQ3TZ50/PQ3TZ53)
(PQ3TZ50)
(PQ3TZ50)
(PQ3TZ53)
(PQ3TZ53)
(PQ3TZ50/PQ3TZ53)
0
0
1
2
3
4
6
5
1
2
3
4
R
L
=
R
L
=6
R
L
=10
Output voltage V
O
(V)
Input voltage V
IN
(V)
T
a
=25C
0
0
1
2
3
4
6
5
10
20
30
R
L
=
R
L
=10
R
L
=6
T
a
=25C
40
Circuit operating current I
BIAS
(mA)
Input voltage V
IN
(V)
-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)
V
IN
:Value when output voltage is 95%
in comparison with the initial value.
I
O
=0.5A
I
O
=0.4A
I
O
=0.3A
I
O
=0.2A
I
O
=0.1A
0
0
1
2
3
4
6
5
1
2
3
4
R
L
=
R
L
=6
R
L
=10
Output voltage V
O
(V)
Input voltage V
IN
(V)
T
a
=25C
Low Power-Loss Voltage Regulators
PQ3TZ50/PQ3TZ53
-25
0
50
25
100
75
125
3.0
2.5
1.5
2.0
0.5
1.0
0
ON-state voltage for control V
C(ON)
(V)
Junction temperature T
j
(C)
V
IN
=5V
I
O
=0.3A
0
-25
0
25
50
75
100
125
3
1
4
2
V
IN
=5V
I
O
=0A
5
Quiescent current I
q
(mA)
Junction temperature T
j
(C)
Input ripple frequency f
(kHz)
Ripple rejection RR (dB)
0
0.1
10
1
100
20
40
60
80
10
30
50
70
V
IN
=5V
Io=0.3A
e
i
=0.5V
rms
Fig.11 ON-state Voltage for Control vs.
Junction Temperature(Typical Value)
Fig.13 Ripple Rejection vs. Input Ripple
Frequency
Fig.15 Power Dissipation vs. Ambient
Temperature(Typical Value)
Fig.14 Output Peak Current vs. Junction
Temperature(Typical Value)
Fig.12 Quiescent Current vs. Junction
Temperature(Typical Value)
PWB
Material : Glass-cloth epoxy resin
Size : 50
X
50
X
1.6mm
Cu thickness : 35
m
PWB
Cu
3
(PQ3TZ50/PQ3TZ53)
-25
0
50
25
100
75
125
2.0
1.5
1.0
0.5 I
OP
:Output current when
Output voltage is 95%
in comparison with
the initial value
0
Output peak current I
OP
(A)
Junction temperature T
j
(C)
2V
1V
0.5V
V
IN
-V
O
=5V
(PQ3TZ50/PQ3TZ53)
0
-20
0
Cu area 740mm
2
Cu area 180mm
2
Cu area 100mm
2
Cu area 70mm
2
Cu area 36mm
2
20
40
60
80
100
1
2
3
Power dissipation P
D
(W)
Ambient temperature T
a
(C)
(PQ3TZ50/PQ3TZ53)
(PQ3TZ50/PQ3TZ53)
Low Power-Loss Voltage Regulators
PQ3TZ50/PQ3TZ53
Sleeve-packaged products
Standard type
-
-
s
Model Line-ups for Tape-packaged Products
Tape-packaged products
High-precision output type
PQ3TZ50
PQ3TZ53
Standard type
-
-
High-precision output type
PQ3TZ50U
PQ3TZ53U
Output current
0.5A output
1.0A output
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