PQ7DV5_01 Datasheet, PDF (2/5 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
Refer to Fig. 2
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 ➃, output voltage turns on.
Fig. 1 Test Circuit
VIN 0.33µF ₁
VC 4
A
2
R2
3
5
Vref
A Iq 2kΩ ^{R1 V}
47µF VO
A IO
+
V
RL
Vo=Vref✕(1+R2/R1)
[R1=2kΩ,Vref Nearly=1.25V]
Fig. 2 Test Circuit for Ripple Rejection
0.33µF
1
2
ei
4
3
5
VIN
VC
2.7V
R2
Vref
R1
2kΩ
47µF +
IO
+
V
RL
f=120Hz(sine wave)
ei(rms)=0.5V
VIN=5V
VO=3V(R1=2kΩ)
IO=0.5A
RR=20 log(ei(rms)/eo(rms))
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)