Datasheet PQ30VB11 Datasheet (Sharp)

Low Power-Loss Voltage Regulators PQ30VB11

PQ30VB11

Variable Output Low Power-Loss Voltage Regulator(Built-in Overheat Shut-Down Function)

■ Features

¡Compact resin full-mold package
¡Low power-loss (Dropout voltage : MAX. 0.5V)
¡Overheat shut-down function (keep shut-down output until

power-on again)

¡Variable output voltage (Setting range : 1.5 to 30V)
¡Overcurrent protection type
¡High-precision output type (Reference voltage precision :

±2.0%)

■ Applications

¡Series power supply for TVs and VCRs
¡Switching power supply

■ Outline Dimensions

10.2MAX

7.4±0.2

PQ30VB11

29.1MAX

13.5MIN

●1 ●2 ●3 ●4

Internal connection diagram

1

Specific IC

3

φ3.2±0.1

4-1.4

4-0.6

3-(2.54)

2

4

3.6±0.2

+0.3

-0

+0.2

-0.1

1 DC input (VIN)
2 DC output (V
3 GND
4 Output voltage

minute
adjustment
terminal (V

4.5±0.2

O

ADJ

(0.5)

)

)

(Unit : mm)

2.8±0.2

4.8MAX

15.6±0.5

(1.5)

■ Absolute Maximum Ratings

*1

Input voltage

*1

Output adjustment terminal voltage
Output current
Power dissipation (No heat sink)
Power dissipation (With infinite heat sink)

*2

Junction temperature
Operating temperature
Storage temperature

*3

Soldering temperature

*1

All are open except GND and applicable terminals.

*2

Overheat shut-down function operates at T

*3

For 10s

“ 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 version of the device specification sheets before using any SHARP's device. ”

Parameter Symbol Rating Unit

j

>=110˚C.

(Ta=25˚C)

V

IN

V

ADJ

I

O

P

D1

P

D2

T

j

T

opr

T

atg

T

sol

35

7
1

1.25

12.5
150

-20 to +80

-40 to +150
260

V
V

A
W
W
˚C
˚C
˚C
˚C

· Please refer to the chapter“ Handling Precautions ”.

PQ30VB11Low Power-Loss Voltage Regulators

■ Electrical Characteristics

(Unless otherwise specified, condition shall be VIN=15V, Vo=10V, Io=0.5A, R1=390Ω, Ta=25˚C)

Parameter Symbol Conditions
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of reference voltage
Dropout voltage
Quiescent current
Overheat shut-down temperature

*4

Input voltage shall be the value when output voltage is 95% in comparison with the initial value.

VIN

VO

RegL

egI

R

RR

ref

V

TeVref

Vi-O

Iq

Tsd

O=5mA to 1A

I

IN=11 to 28V

V
Refer to Fig. 2

j=0 to 125˚C, IO=5mA

T

*4

, IO=0.5A

O=0

I

Fig.1 Test Circuit

VIN

0.33µF

●3

A

●2●1

R2

●4

R1

Iq 390Ω

Vref

V

47µF

+

VO

IO

A

V

RL

Fig.2 Test Circuit of Ripple Rejection

+

ei

~

V

IN

0.33µF

●2●1

R2

●4

●3

R1

390Ω

47µF

+

O

I

eo

V

~

RL

-

-

4.5

1.5

-

-

45

1.225

-

-

-

110

O=Vref X 1+ ----------- =1.25X 1+ -----------

V

[R1=390Ω,Vref =1.25V]

IO=0.5A
f=120Hz (sine wave)

i=0.5Vrms

e
RR=20 log (ei/eo)

R2
R1

-

-

0.3

0.5
55

1.25
±1.0

-

-

130

R2
R1

35
30

1.0

2.5

-

1.275

-

0.5
7

150

UnitMAX.TYP.MIN.

V

V
%
%

dB

V
%

V

mA

˚C

Fig.3 Power Dissipation vs. Ambient

Temperature

P

D1 :No heat sink

P

13
12
11
10

9
8

7
6
5
4
3

Power dissipation PD (W)

2

PD1
1
0

-20 0

Note) Oblique line portion:Overheat protection operates in this

area.

D2 :With infinite heat sink

D2

P

50 100 150

Ambient temperature Ta (˚C)

Fig.4 Overcurrent Protection

Characteristics (Typical Value)

100

80

60

40

20

Relative output voltage (%)

0

0.5 1.0 1.5 2.0

Output current IO (A)

Low Power-Loss Voltage Regulators PQ30VB11

Fig.5 Output Voltage Adjustment

Characteristics

30

25

(V)

O

20

R

1

=390Ω

15

10

Output voltage V

5

0

0.01 0.1 1 10

2

(kΩ)

R

Fig.7 Dropout Voltage vs. Junction

Temperature

0.5

0.45

0.4

(V)

-O

i

0.35

0.3

0.25

O

=1A

I

0.75A

0.2

0.15

0.1

Dropout voltage V

0.5A

0.25A

0.05
0

-25 25 50 75 100 1250

j

Junction temperature T

(˚C)

Fig.9 Output Peak Current vs. Junction

Temperature

2.2

Fig.6 Output Voltage vs. Input Voltage

Tj=25˚C

10

V

9
8
7
6

O=10V

1=390Ω

R
R2=2710Ω

L=20Ω

R

L=∞Ω

R

RL=10Ω

5
4
3

Output voltage VO (V)

2
1

0

123456789101112

Input voltage VIN (V)

Fig.8 Circuit Operating Current vs. Input

Voltage

40

Tj=25˚C
V

O

=10V

35

(mA)

BIAS

Circuit operating current I

R

1

=390Ω

2

=2710Ω

R

30
25
20
15
10

5
0

1 2 3 4 5 6 7 8 9101112131415

Input voltage V

IN

(V)

R
R

R

L

L

L

=10Ω

=20Ω
=∞Ω

V

IN-VO

(A)

OP

2

1.8

=5V

2V

1V

1.6

1.4

Output peak current I

IOP:Output current when output voltage
is 95% in comparison with the initial value

1.2

0.5V

-25 25 50 75 100 1250
Junction temperature T

j

(˚C)

■ Overheat Shut-down Characteristics

ON

IN

V

OFF

*Tsd

T

j

V

O

PQ30VB11Low Power-Loss Voltage Regulators

* Tsd:Overheat shut-down temperature (Tj>=110˚C)
1 Overheat shut-down operates at T
2 OFF-state is kept until V

j=

Tsd and output OFF-state is maintained.

IN

is once turned off.

■ ON/OFF Operation

D

D

1

V

V

IN

●1

C

IN

●2

D

2

R

2

●4

●3

R

1

V

ADJ

+

R

3

C

O

V

O

R

L

High : Output OFF

C

Low : Output ON

V

R

1

Equivalent Circuit
in OFF-state

¡ON/OFF operation is available by mounting externally D2 and R3.
¡When VADJ is forcibly raised above Vref (1.25V TYP) by applying the external signal, the output is turned off(pass transistor of

regulator is turned off). When the output is OFF, VADJ must be higher then Vref MAX., and at the same time must be lower than
maximum rating 7V.
In OFF-state, the load current flows to RL from VADJ through R2. Therefore the value of R2 must be as high as possible.

¡VO'=VADJXRL/ (RL+R2)

occurs at the load. OFF-state equivalent circuit R1 up to 10kΩ is allowed. Select as high value of RL and R2 as possible in this range.
In some case, as output voltage is getting lower (VO<1V), impedance of load resistance rises. In such condition, it is sometime
impossible to obtain the minimum value of VO'.So add the dummy resistance indicated by RD in the figure to the circuit parallel to the
load.

2

ADJ

R

2

R

R

L

D

VO’