PQ7DV5 Datasheet, PDF (2/4 Pages) Sharp Electrionic Components – Variable Output Type, High Output Current (5A) Type Low Power-loss Voltage Regulators

Low Power-Loss Voltage Regulators
PQ7DV5
s Electrical Characteristics
(Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A, VO=3V [R1=2kΩ] Ta=25˚C)
Parameter
Symbol
Conditions
NIN. TYP. MAX. Unit
Input voltage
Output voltage
Reference voltage
Load regulation
Line regulation
Temperature coefficient of reference voltage
Ripple rejection
Dropout voltage
*3 _{ON-state voltage for control}
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Quiescent current
VIN
VO
Vref
RegL
RegI
TCVO
RR
Vi-o
VC (ON)
IC (ON)
VC (OFF)
IC (OFF)
Iq
-
-
-
IO=5mA to 5.0A
VIN=4 to 10V
Tj=0 to 125˚C
-
VIN=3V, IO=5A
-
VC=2.7V
-
VC=0.4V
Io=0A
3
1.5
1.225
-
-
-
45
-
2.0
-
-
-
-
-
-
1.25
0.5
0.5
±0.01
55
-
-
-
-
-
-
10
7
1.275
2.0
2.5
-
-
0.5
-
20
0.8
- 0.4
17
V
V
V
%
%
%/˚C
dB
V
V
µA
V
mA
mA
*3 In case of opening control terminal 4, output voltage turns on.
Fig.1 Test Circuit
VIN 0.33µF _1q
VC 4q
A
2q
R2
3q ^5q
Vref
A Iq 2kΩ ^{R1 V}
47µF VO
A IO
+
V
RL
Vo=Vref X (1+R2/R1)
=1.25 X (1+R2/R1)
[R1=2kΩ,Vref =1.25V]
Fig.2 Test Circuit for Ripple Rejection
0.33µF
1q
2q
~ ei
VIN
4q
3q ^5q
VC
2.7V
R2
Vref
R1
2kΩ
47µF +
IO
+
V~ eo
RL
f=120Hz (sine wave)
ei=0.5Vrms
VIN=5V
VO=3V (R1=2kΩ)
IO=0.5A
RR=20 log (ei/eo)
Fig.3 Power Dissipation vs. Ambient
Temperature
60
PD2
50
40
30
PD1 :No heat sink
PD2 :With infinite heat sink
20
10
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 Overcurrent Protection
Characteristics (Typical Value)
100
80
60
40
20
0
0 2.0 4.0 6.0 8.0 10 12
Output current IO (A)