Regulator. PQ7RV4 Datasheet

PQ7RV4 Datasheet PDF


PQ7RV4
Low Power-Loss Voltage Regulators
PQ7RV4
PQ7RV4
Variable Output (1.5 to 7V), 4.6A Output Low Power-loss Voltage Regulator
s Features
¡Low power-loss
(Dropout voltage : MAX.0.5V at Io=4.0A)
(Dropout voltage : MAX.1.0V at Io=4.6A)
¡TO-220 package
¡1.5V to 7V/4.6A output type
¡Low operating voltage (Minimum operating voltage:3.0V)
¡High-precision reference voltage type
Reference voltage precision : ±2.0%
¡Built-in ON/OFF control function
¡Built-in overcurrent protection, overheat protection function
s Applications
¡Power supplies for various electronic equipment such as personal
computers
s Outline Dimensions
10.2MAX
PQ7RV4 φ3.2±0.1
4-1.4
+0.3
-0
4-0.6
+0.2
-0.1
3-(2.54)
1q 2q 3q 4q
(Unit : mm)
4.5±0.2
2.8±0.2
(1.5)
(0.5)
Internal connection diagram
1
Control circuit
2
4
3
1 DC input (VIN)
2 DC output (VO)
3 GND
4 Output adjustment
terminal (VADJ)
s Absolute Maximum Ratings
Parameter
*1 Input voltage
*1 ON/OFF control terminal voltage
Output current
*2 Power dissipation
*3 Junction temperature
Operating temperature
Storage temperature
Soldering temperature
*1 All are open except GND and applicable terminals.
*2 PD1: No heat sink, PD2: With infinite heat sink
*3 Overheat protection may operate at 125=<Tj=<150˚C.
Symbol
VIN
VADJ
IO
PD1
PD2
Tj
Topr
Tstg
Tsol
(Ta=25˚C)
Rating
Unit
10 V
5V
4.6 A
1.8 W
18
150 ˚C
-20 to +80
˚C
-40 to +150 ˚C
260 (For 10s) ˚C
· Please refer to the chapter“ Handling Precautions ”.
“ 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. ”


Part PQ7RV4
Description Variable Output (1.5 to 7V) / 4.6A Output Low Power-loss Voltage Regulator
Feature PQ7RV4; Low Power-Loss Voltage Regulators PQ7RV4 PQ7RV4 Variable Output (1.5 to 7V), 4.6A Output Low Power.
Manufacture Sharp
Datasheet
Download PQ7RV4 Datasheet


Low Power-Loss Voltage Regulators PQ7RV4 PQ7RV4 Variable O PQ7RV4 Datasheet





PQ7RV4
Low Power-Loss Voltage Regulators
PQ7RV4
s Electrical Characteristics
(Unless otherwise specified, conditions shall be VIN=5V,VO=3.3V(R1=2k),Io=2.0A,Ta=25˚C)
Parameter
Input voltage
Output voltage
Load regulation
Line regulation
Reference voltage
Temperature coefficient of reference voltage
Ripple rejection
Dropout voltage(1)
Dropout voltage(2)
Quiescent current
Symbol
VIN
VO
RegL
RegI
Vref
TCVref
RR
Vi-O(1)
Vi-O(2)
Iq
Conditions
-
-
IO=5mA to 4.6A
VIN=4 to 10V
-
Tj=0 to125˚C
-
*4, IO=4.0A
*4, IO=4.6A
IO=0A
MIN.
3.0
1.5
-
-
1.225
-
45
-
-
-
TYP.
-
-
0.5
0.5
1.25
±0.01
55
-
-
-
MAX.
10.0
7.0
2.0
2.5
1.275
-
-
0.5
1.0
17
Unit
V
V
%
%
V
%/˚C
dB
V
V
mA
*4 Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
Fig.1 Test Circuit
VIN 1q
0.33µF
2q
R2
3q 4q
R1
A Iq 2k
47µF VO
A IO
+
Vref
V
V RL
Vo=Vref X (1+R2/R1)
=1.25 X (1+R2/R1)
[R1=2k,Vre=1.25V]
Fig.2 Test circuit for Ripple Rejection
ei ~
VIN
1q
0.33µF
2q
R2
3q 4q
R1
2k
+
f=120Hz (sine wave)
IO
47µF +
ei=0.5Vrms
VO=3V
V~ eo VIN=5V (R1=2k)
RL IO=0.5A
RR=20 log (ei/eo)
Fig.3 Power Dissipation vs. Ambient
Temperature
20
PD2
15
10
PD1 :No heat sink
PD2 :With infinite heat sink
5
PD1
0
-20 0 20 40 60 80
Ambient temperature Ta (˚C)
Note) Oblique line portion:Overheat protection may operate
in this area.
Fig.4
Reference Voltage Deviation vs.
Junction Temperature
5
VIN=5V
4 VO=3.3V
3 R1=2k
IO=2A
2
1
0
-1
-2
-3
-4
-5
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)



PQ7RV4
Low Power-Loss Voltage Regulators
Fig.5 Relative Output Voltage vs. Output
Current (Typical Value)
100
80
60
40
20
0
0 2.0 4.0 6.0 8.0 1.0
Output current IO (A)
Fig.7 Circuit Operating Current vs. Input
Voltage
120 Ta =25˚C
100
RL=0.72
50
RL=1.65
RL=
0
012345
Input voltage VIN (V)
Fig.9 Quiescent Current vs. Junction
Temperature
20
VIN =5
18 VO=3.3V
16 R1=2k
14 IO =0A
12
10
8
6
4
2
0
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
PQ7RV4
Fig.6 Output Voltage vs. Input Voltage
4
Ta =25˚C
3 RL=1.65
RL=
RL=0.72
2
1
0
0 123 45
Input voltage VIN (V)
Fig.8 Dropout Voltage vs. Junction
Temperature
1.0
VO=3.3V
R1=2k
0.8
0.6
0.4 IO =4.6A
IO =4A
0.2
0
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.10 Ripple Rejection vs. Input Ripple
Frequency
100
80
60
40
20 VIN=5V
Io=0.5A
0 ei=0.5Vrms
0.1 1
10
Input ripple frequency f (kHz)
100






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