PQ20VZ51 Ver la hoja de datos (PDF) - Sharp Electronics
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Fabricante
PQ20VZ51 Datasheet PDF : 7 Pages
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Low Power-Loss Voltage Regulators
PQ20VZ51/PQ20VZ11
s Electrical Characteristics
Unless otherwise specified, VIN=12V, Vo=10V,❇4, R1=1kΩ, Vc=2.7V(Ta=25˚C)
Parameter
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of reference voltage
Dropout voltage
Quiescent current
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
Symbol
Vi
VO
RegL
RegI
RR
Vref
TCVref
Vi-O
Iq
VC(ON)
IC(ON)
VC(OFF)
IC(OFF)
Iqs
Conditions
VO=1.5V
R2=225Ω to 14.6kΩ
❇5
VIN=11 to 21V, IO=5mA
Refer to Fig. 2
❇4
Tj=0 to 125˚C, Io=5mA
❇4,❇6
IO=0
−
−
IO=0
−
VC=0.4V
MIN. TYP. MAX. Unit
4.5
−
−
V
1.5
−
20
V
−
0.2
2.0
%
−
0.2
2.5
%
45
60
−
dB
1.225 1.25 1.275
V
−
±1.0
−
%
−
0.2
0.5
V
−
4
7
mA
2.0
−
−
V
−
−
200
µA
−
−
0.8
V
−
−
2.0
µA
−
−
5.0
µA
❇4 PQ20VZ51:Io=0.3A, PQ20VZ11:Io=0.5A
❇5 PQ20VZ51:Io=5mA to 0.5A, PQ20VZ11: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 ➁, output voltage turns off.
Fig.1 Test Circuit
VIN 0.33µF 1
VC 2
IC A
3
R2
5
4
A Iq 1kΩ R1 V
47µF VO
A IO
+
V
RL
VO=Vref ×
1+ ––R––2–
R1
[R1=1kΩ,Vref Nearly=1.25V]
Fig.2 Test Circuit of Ripple Rejection
0.33µF
1
ei
2
VIN
VC
3
54
47µF +
R2
47µF +
R1
1kΩ
IO
V eo
RL
f=120Hz(sine wave)
ei(rms)=0.5V
IO=0.3A
RR=20 log(ei(rms)/eo(rms))
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