SHARP PQ3RF43

Low Power-Loss Voltage Regulators
PQ3RF43
PQ3RF43
3.3V/4.6V Output Low Power-Loss Voltage Regulator
■ Outline Dimensions
(Unit : mm)
4.5±0.2
10.2MAX
φ3.2±0.1
4-1.4
+0.3
-0
4-0.6
+0.2
-0.1
15.6±0.5
PQ3RF43
4.8MAX
7.4±0.2
3.6±0.2
2.8±0.2
13.5MIN
¡Low power-loss
(Dropout voltage : MAX.0.5V at Io = 4.0A)
(Dropout voltage : MAX.1.0V at Io = 4.6A)
¡Compact resin full-mold package (TO-220 package)
¡3.3V/4.6A output type
¡High-precision output voltage type
Output voltage precision : ±2.5%
¡Built-in ON/OFF control function
¡Built-in overcurrent protection, overheat protection
function
29.1MAX
■ Features
(1.5)
(0.5)
3-(2.54)
1
● 2
● 3
● 4
●
■ Applications
¡Power supplies for various electronic equipment such as
personal computers
Internal connection diagram
1
2
Control circuit
4
1 DC input (VIN)
2 DC output (VO)
3 GND
4 ON/OFF control
terminal (VC)
3
■ Absolute Maximum Ratings
Parameter
*1
*1
*2
*1
*2
Input voltage
ON/OFF control terminal voltage
Output current
Power dissipation (No heat sink)
Power dissipation (With infinite heat sink)
Junction temperature
Operating temperature
Storage temperature
8 Soldering temperature
(Ta=25˚C)
Symbol
VIN
VC
IO
PD1
PD2
Tj
Topr
Tstg
Tsol
Rating
Unit
10
V
10
V
4.6
A
1.8
W
18
150
˚C
-20 to +80
˚C
-40 to +150
˚C
260 (For 10s.) ˚C
All are open except GND and applicable terminals.
Overheat protection may operate at 125=<Tj=<150˚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. ”
Low Power-Loss Voltage Regulators
■ Electrical Characteristics
*4
PQ3RF43
(Unless otherwise specified, conditions shall be VIN=5V,IO=2.0A,Ta=25˚C)
Parameter
Output voltage
Load regulation
Line regulation
Temperature coefficient of output voltage
Ripple rejection
Dropout voltage (1)
Dropout voltage (2)
ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
Symbol
VO
RegL
RegI
TCVO
RR
Vi-O(1)
Vi-O(2)
VC (ON)
IC (ON)
VC (OFF)
IC (OFF)
Iq
Conditions
IO=5mA to 4.6A
VIN=4 to 10V
Tj=0 to 125˚C
*3, IO=4.0A
*3, IO=4.6A
VC=2.7V
VC=0.4V
IO=0A
NIN.
3.218
45
2.0
-
*3
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
*4
In case of opening control terminal4, output voltage turns on.
Fig.1
Fig.2
Test Circuit
VIN
1
●
4
●
3
●
0.33µF
Fig.3
A
VC
A
A
Iq
IO
+
1
●
RL
Power Dissipation vs. Ambient
Temperature
20
IO
4
●
+
3
●
0.33µF
VIN
Unit
V
%
%
%/˚C
dB
V
V
V
µA
V
mA
mA
47µF +
2
●
~ ei
V
IC
MAX.
3.382
2.0
2.5
0.5
1.0
20
0.8
- 0.4
17
Test Circuit for Ripple Rejection
VO
47µF
2
●
TYP.
3.3
0.5
0.5
±0.02
55
-
Fig.4
VC
RL V
~ eo
f=120Hz (sine wave)
ei=0.5Vrms
IO=0.5A
RR=20 log (ei/eo)
Overcurrent Protection
Characteristics(Typical Value)
100
15
10
PD1 :No heat sink
PD2 :With infinite heat sink
5
Relative output voltage (%)
Power dissipation PD (W)
PD2
80
60
40
20
PD1
0
-20
Note)
0
20
40
60
80
Ambient temperature Ta (˚C)
Oblique line portion:Overheat protection may
operate in this area.
0
0
2.0
4.0
6.0
8.0
Output current IO (A)
10.0
Low Power-Loss Voltage Regulators
Fig.5
2
1
0
-1
-2
Ta =25˚C
3
Output voltage VO (V)
Output voltage deviation ∆VO (mV)
Output Voltage vs. Input Voltage
4
VIN=5V
4 IO=2A
3
RL=1.65Ω
RL=∞
RL=0.72Ω
2
1
-3
-4
-5
-25
Fig. 7
0
25
50
75
100
Junction temperature Tj (˚C)
0
125
Circuit Operating Current vs. Input
Voltage
Fig.8
100
RL=0.72Ω
50
RL=1.65Ω
1
2
3
4
Input voltage VIN (V)
5
VIN =0.95VO
0.8
0.6
IO =4.6A
0.4
IO =4A
0.2
RL=∞
0
0
Fig.9
1
2
3
4
Input voltage VIN (V)
0
-25
5
Quiescent Current vs. Junction
Temperature
125
100
Ripple rejection RR (dB)
VIN =5V
18 IO =0A
16
14
12
10
8
6
4
2
0
-25
0
25
50
75
100
Junction temperature Tj (˚C)
Fig.10 Input Ripple Frequency vs. Ripple
Rejection
20
Quiescent current Iq (mA)
0
Dropout Voltage vs. Junction
Temperature
1.0
Ta =25˚C
120
Dropout voltage Vi-O (V)
Circuit operating current IBIAS (mA)
Fig. 6
Output Voltage Deviation vs.
Junction Temperature
5
PQ3RF43
0
25
50
75
100
Junction temperature Tj (˚C)
125
80
60
40
VIN=5V
Io=0.5A
20 Vo=3.3A
ei=0.5Vrms,
R1=2kΩ
0
0.1
1
10
Input ripple frequency f (kHz)
100
Low Power-Loss Voltage Regulators
■ Typical Application
1
●
VO
2
●
Specific IC
4
●
+
3
●
0.33µF
CO
ON/OFF Control
Load
DC input
High or Open :output ON
Low
:output OFF
PQ3RF43