PQ20WZ5U 查看數據表（PDF） - Sharp Electronics
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PQ20WZ5U
Sharp Electronics
PQ20WZ5U Datasheet PDF : 6 Pages
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Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
s Electrical Characteristics
(Unless otherwise specified, conditions shall be VIN=5V, Vo=3.3V,❇4,R1=2kΩ, R2=500Ω, Vc=2.7V, Ta=25˚C)
Parameter
Input voltage
Output voltage
Symbol
VIN
Vo
Conditions
––
––
MIN. TYP. MAX. Unit
3.5
––
24
V
3.0
––
20
V
Load regulation
Line regulation
Ripple rejection
RegL
RegI
RR
❇5
VIN=4 to 10V, Io=5mA
Refer to Fig. 2
––
––
2.0
%
––
––
2.5
%
45
60
––
dB
Reference voltage
Temperature coefficient of Reference voltage
Dropout voltage
Quiescent current
❇7 ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Output OFF-state consumption current
Vref
VcVref
Vi-o
Iq
Vc(ON)
Ic(ON)
Vc(OFF)
Ic(OFF)
Iqs
❇4
Tj=0 to 125˚C, Io=5mA
❇4, 6
Io=0A
––
––
Io=0A
Io=0A, Vc=0.4V
Io=0A, Vc=0.4V
2.574 2.64 2.706
V
––
±1.0
––
%
––
––
0.5
V
––
––
8
mA
2.0
––
––
V
––
––
200
µA
––
––
0.8
V
––
––
2.0
µA
––
––
5.0
µA
❇4 PQ20WZ51:Io=0.3A, PQ20WZ11:Io=0.5A
❇5 PQ20WZ51:Io=5mA to 0.5A, PQ20WZ11:Io=5mA to 1.0A
❇6 Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
❇7 In case of opening control terminal 2 , output voltage turns off.
Fig. 1 Test Circuit
VIN 0.33µF
1
3
VC 2
5
A IC A
4
Iq 2kΩ
R2
Vref
R1 V
47µF VO
A IO
+
V
RL
Fig. 2 Test Circuit for Ripple Rejection
0.33µF
1
3
R2
IO
ei
2
4
5
47µF +
V eo
VIN
VC
R1
2kΩ
RL
2.7V
VO=Vref X 1+ ––R–2––
R1
[R1=2kΩ,Vref Nearly =2.64V]
Fig. 3 Power Dissipation vs. Ambient
Temperature
10
PD:With infinite heat sink
8
PD
5
f=120Hz(sine wave)
ei(rms)=0.5V
IO=0.3A
RR=20 log(ei(rms)/eo(rms))
VIN=5V
VO=3.3V(R1=2kΩ)
Fig. 4 Overcurrent Protection
Characteristics (Typical Value)
(PQ20WZ51)
4
VO=3.3V
3
Vi–O =0.5V
Vi–O =1V
2
Vi–O =2V
Vi–O =3V
1
0
–20 0
50 80 100
150
Ambient temperature Ta (˚C)
Note) Oblique line portion : Overheat protection may operate in this area.
0
0
0.5
1.0
1.5
2.0
Output current IO (A)
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