Sharp PQ3DF53 Datasheet
Low Power-Loss Voltage Regulators
PQ3DF53
3.3V Output, High Output Current (5A) Type Low Power-loss Voltage Regulator
PQ3DF53
■ Features
¡TO-3P package
¡Low power-loss (Dropout voltage : MAX. 0.5V at Io=5A)
¡3.3V output
¡High output current (5A)
¡High-precision output voltage type
(Output voltage precision : ±2.5%)
¡Built-in ON/OFF cotrol function
¡Built-in overcurrent protection, overheat protection
function
■ Applications
¡Power supplies for various electronic equipment such as
personal computers
■ Outline Dimensions
17.0MAX
PQ3DF53
19±0.5
39.0MAX
4-(2.54)
12345
Internal connection diagram
1
IC
chip
Reference
voltage
5-0.8±0.2
Controller
Comparator
5±0.2
3.7MAX
6
17.0MIN
2
4
3
4.5±0.2
2.0±0.2
(1.4)
(0.6)
1 DC input (VIN)
26DC output (V
3 GND
4 ON/OFF control
terminal (V
5 NC
(Unit : mm)
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
IN
V
C
I
O
P
D1
P
D2
T
j
T
opr
-20 to + 80
T
stg
-40 to +150
T
sol
260 (For 10s)
j
=<150˚C.
(Ta=25˚C)
10
10
5.0
2.2
60
150
V
V
A
W
W
˚C
˚C
˚C
˚C
· Please refer to the chapter“ Handling Precautions ”.
Low Power-Loss Voltage Regulators
PQ3DF53
■ Electrical Characteristics
(Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A Ta=25˚C)
Parameter Symbol Conditions
Output voltage
Load regulation
Line regulation
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage
*4
ON-state voltage for control
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
R
T
V
V
I
C (ON)
V
C (OFF)
I
C (OFF)
V
O
eg
CVO
RR
i
-o
C (ON)
I
q
I
O
=5mA to 5.0A
I
IN
=4 to 10V
V
j
=0 to 125˚C
T
*3
, IO=5.0A
C
=2.7V
V
C
=0.4V
V
O
=0A
I
-
-
3.218
-
-
-
45
3.3
0.5
0.5
±0.02
55
-
-
2.0
-
-
-
-
-
Fig.1 Test Circuit Fig.2 Test Circuit for Ripple Rejection
47µF
V
IN
●5
0.33µF
●2●1
V
C
●4
●3
A
A
I
q
I
C
47µF
+
V
O
I
O
A
V
R
L
~
e
i
●5
0.33µF
V
IN
●2●1
●4
●3
+
I
O
+
e
V
R
L
~
3.382
2.0
2.5
-
0.5
-
-
-
0.8
-
-0.4
-
f=120Hz (sine wave)
i
=0.5V
e
VIN=5V
o
O
=0.5A
I
RR=20 log (e
UnitMAX.TYP.MIN.
V
%
%
%/˚C
dB
-
V
-
20
V
µA
V
mA
rms
i/eo
mA
)
17
Fig.3 Power Dissipation vs. Ambient
Temperature
60
50
(W)
D
40
30
PD1 :No heat sink
P
D2
:With infinite heat sink
20
Power dissipation P
10
0
-20 0
Note) Oblique line portion:Overheat protection may
operate in this area.
P
D2
D1
P
4020 60 80
Ambient temperature Ta (˚C)
Fig.4 Overcurrent Protection
Characteristics (Typical Value)
100
80
60
40
20
Relative output voltage (%)
0
024681012
Output current IO (A)
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