PQ20WZ1U Datasheet PQ20WZ11, PQ20WZ1U, PQ20WZ51 | P1-P3

Low Power-Loss Voltage Regulators PQ20WZ51/PQ20WZ11

■

Features

●

Low power-loss

(Dropout voltage : MAX. 0.5V)

●

Surface mount package (equivalent to SC-63)

●

Variable output voltage (3.0 to 20V)

●

Output current (0.5A : PQ20WZ51)

(1.0A : PQ20WZ11)

●

Reference voltage precision : ±2.5%

●

Built-in ON/OFF control function

●

Low dissipation current at OFF-state (Iqs : MAX. 5µA)

●

Built-in overcurrent, overheat protection functions, ASO

protection circuit

●

Available tape-packaged products

(ø330mm reel : 3 000 pcs., PQ20WZ5U/1U)

■

Applications

●

Personal computers

●

CD-ROM drives

●

Power supplies for various OA equipment

■

Outline Dimensions

(Unit : mm)

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

• Please refer to the chapter " Handling Precautions ".

PQ20WZ51/PQ20WZ11

■

Absolute Maximum Ratings

( )

DC output Vo

( )

Vo

( )

Vc

GND

DC input V

IN

1

2

3

1

2

3

4

5

4

Internal connection diagram

ON/OFF control terminal

Heat sink is common to terminal

Output voltage adjustment terminal

Specific IC

()

V

ADJ

Model No.

0.5±

0.2

0.1

Epoxy resin

0.5

1.7

0.5

0.9

5.2

0.5

9.7

MAX.

5.5

0.5

2.5

MIN.

2.3

0.5

4 1.27

6.6

MAX.

±

–

±

()

3

1 2 3 4 5

Parameter

Symbol

Rating

Unit

VIN

Vc

VADJ

Io

PD

Tj

Topr

Tstg

Tsol

24

5

V

A

W

˚C

❇1

❇2

❇3

❇1

All are open except GND and applicable terminals.

❇2

Overheat protection may operate at 125<=Tj<=150˚C

❇3

For 10s

(Ta=25˚C)

Input voltage

ON/OFF control terminal voltage

Output adjustment terminal voltage

Output current

Power dissipation(with infinite heat sink)

Junction temperature

Operating temperature

Storage temperature

Soldering temperature

PQ20WZ11

PQ20WZ51

0.5

1.0

8

150

–20 to +80

–40 to +150

260

Notice In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP

devices shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.

Internet Internet address for Electronic Components Group http://sharp-world.com/ecg/

Low Power-Loss Voltage Regulators PQ20WZ51/PQ20WZ11

■

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

V

IN

Vo

R

eg

L

R

eg

I

RR

V

ref

VcV

ref

V

i

-o

I

q

Vc(

ON

)

Ic(

ON

)

Vc(

OFF

)

Ic(

OFF

)

I

qs

UnitMAX.TYP.MIN.

3.5

3.0

––

45

2.574

––

2.0

––

❇5

V

IN

=4 to 10V, Io=5mA

Refer to Fig. 2

❇4

T

j

=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 V

IN

=5V, V

o

=3.3V,

❇4

,R

1

=2kΩ, R

2

=500Ω, V

c

=2.7V, T

a

=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

P

D

P

D

:With infinite heat sink

8050 100 150

5

10

8

Power dissipation P

D

(W)

Ambient temperature T

a

(˚C)

0 0.5 1.0 1.5 2.0

4

3

2

1

0

Output voltage VO (V)

Output current IO (A)

V

i–O =2V

V

i–O =3V

V

i–O =0.5V

V

O=3.3V

V

i–O =1V

A

V

A

V

IN

V

C

I

q

V

ref

I

C

2kΩ

I

O

V

O

R

L

47µF

0.33µF

+

R

2

R

1

V

O

=V

ref

✕

1+ –––––

R

2

R

1

[R

1

=2kΩ,Vref Nearly =2.64V]

1

2

3

4

5

V

C

47µF

V

IN

ei

2.7V

eo

2kΩ

I

O

R

L

0.33µF

+

R

2

R

1

f=120Hz(sine wave)

e

i(rms)

=0.5V

I

O

=0.3A

RR=20 log(e

i(rms)

/e

o(rms)

)

V

IN

=5V

V

O

=3.3V(R

1

=2kΩ)

1

2

3

4

5

V

Note)

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

Low Power-Loss Voltage Regulators PQ20WZ51/PQ20WZ11

Fig. 5 Overcurrent Protection

Characteristics (Typical Value)

(PQ20WZ11)

Fig. 6 Output Voltage Adjustment

Characteristics

0 0.5 1.0 1.5 2.0

4

3

2

1

0

Output voltage VO (V)

Output current IO (A)

V

i–O =2V

V

i–O =3V

V

i–O =0.5V

V

O=3.3V

V

i–O =1V

R

2

(kΩ)

Output voltage V

O

(V)

0.1 1 10010

R

1=2kΩ

0

5

10

15

20

Fig. 7 Reference Voltage Deviation vs.

Junction Temperature (Typical Value)

Fig. 8 Output Voltage vs. Input Voltage

(PQ20WZ51)

Fig. 9 Output Voltage vs. Input Voltage

(PQ20WZ11)

Fig.10 Dropout Voltage vs. Junction

Temperature (PQ20WZ51)

0 25 50 75 100 125

–15

–20

–25

–

5

15

–10

0

10

20

V

IN

=7V

V

O

=3.3V(R

1

=2kΩ,R

2

=0.5kΩ)

I

O

=0.3A (PQ20WZ51)

=0.5A (PQ20WZ11)

25

Reference voltage deviation ∆V

ref

(mV)

Junction temperature T

j

(˚C)

–25

PQ20WZ51

PQ20WZ11

Output voltage VO (V)

Input voltage VIN (V)

0123 56784

RL=6.6Ω

RL=∞Ω

1

0

2

5

6

7

3

4

8

RL=11Ω

VC=2.7V , C

i

=0.33µF , C0=47µF

T

j

=25˚C

R

1=2kΩ ,R2=0.5kΩ

Output voltage V

O

(V)

Input voltage V

IN

(V)

0123 56784

R

L

=3.3Ω

R

L

=∞Ω

1

0

2

5

6

7

3

4

8

R

L

=6.6Ω

V

C

=2.7V , Ci=0.33µF , C

0

=47µF

T

j=25˚C

R

1

=2kΩ ,R

2

=0.5kΩ

Junction temperature T

j

(˚C)

Dropout voltage V

i

–O

(V)

–25 0 25 50 75 100 125

0.14

0.13

0.12

0.11

0.1

0.15

0.16

0.17

0.18

0.19

0.2

V

IN

=3.135V, Vc=2.7V, R

1

=2kΩ, R

2

=500Ω, I

O

=0.3A

PQ20WZ1U

PQ20WZ1U

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