PQ20WZ51 datasheet(2/6 Pages) SHARP

Part #	PQ20WZ51

Description	Variable Output, General Purpose, Surface Mount Type Low Power-Loss Voltage Regulator

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Manufacturer	SHARP [Sharp Corporation]

Direct Link	http://sharp-world.com/

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Low Power-Loss Voltage Regulators

PQ20WZ51/PQ20WZ11

s Electrical Characteristics

Fig. 1 Test Circuit

Fig. 2 Test Circuit for Ripple Rejection

Fig. 4 Overcurrent Protection

Characteristics (Typical Value)

(PQ20WZ51)

Fig. 3 Power Dissipation vs. Ambient

Temperature

Parameter

Symbol

Conditions

VIN

Vo

RegL

RegI

RR

Vref

VcVref

Vi-o

Iq

Vc(ON)

Ic(ON)

Vc(OFF)

Ic(OFF)

Iqs

Unit

MAX.

TYP.

MIN.

3.5

3.0

––

45

2.574

––

2.0

––

❇5

VIN=4 to 10V, Io=5mA

Refer to Fig. 2

❇4

Tj=0 to 125˚C, Io=5mA

❇4, 6

Io=0A

––

Io=0A

Io=0A, Vc=0.4V

––

60

2.64

±1.0

––

24

20

2.0

2.5

––

2.706

––

0.5

8

––

200

0.8

2.0

5.0

❇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

, output voltage turns off.

(Unless otherwise specified, conditions shall be VIN=5V, Vo=3.3V,❇4,R1=2k

Ω, R2=500Ω, Vc=2.7V, Ta=25˚C)

V

%

dB

V

%

V

mA

V

µA

V

µA

Input voltage

Output voltage

Load regulation

Line regulation

Ripple rejection

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

2

0

–20

0

PD

PD:With infinite heat sink

80

50

100

150

5

10

8

Ambient temperature Ta (˚C)

0

0.5

1.0

1.5

2.0

4

3

2

1

0

Output current IO (A)

Vi–O =2V

Vi–O =3V

Vi–O =0.5V

VO=3.3V

Vi–O =1V

A

V

A

VIN

VC

Iq

Vref

IC

2k

Ω

IO

VO

RL

47

µF

0.33

µF

+

R2

R1

VO=Vref X 1+ –––––

R2

R1

[R1=2k

Ω,Vref Nearly =2.64V]

1

2

3

4

5

VC

47

µF

VIN

ei

2.7V

eo

2k

Ω

IO

RL

0.33

µF

+

R2

R1

f=120Hz(sine wave)

ei(rms)=0.5V

IO=0.3A

RR=20 log(ei(rms)/eo(rms))

VIN=5V

VO=3.3V(R1=2k

Ω)

1

2

3

4

5

V

Note) Oblique line portion : Overheat protection may operate in this area.

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