Sharp PQ1CF2 Datasheet

Chopper Regulators PQ1CF2

PQ1CF2

TO-220 Package Chopper Regulator

■ Features

¡Maximum switching current : 1.5A
¡Built-in ON/OFF control function
¡Built-in soft start function
¡Built-in oscillation circuit

(oscillation frequency : TYP.100kHz)

¡Built-in overheat protection, overcurrent protection function
¡TO-220 package
¡Variable output voltage

(1.26 to 35V/-1.26 to-30V)
[Possible to choose step down output/inversing output according

to external connection circuit]

■ Applications

¡Switching power supplies
¡Facsimiles
¡Printers
¡Personal computers

■ Outline Dimensions

10.2MAX

φ3.2±0.1

7.4±0.2

PQ1CF2

(24.6)

5-0.8±0.1

4-(1.7)

●1●2 ●3●4 ●5

3.6±0.2

4.5±0.2

(1.5)

(0.5)

3.2±0.5

(5.0)

8.2±0.7

IN

1 V
2 VOUT
3 COM

ADJ

4 O
5 ON/OFF control

terminal (V

C)

(Unit : mm)

2.8±0.2

16.4±0.7

2.0

5.0±0.5

4.4MIN

■ Absolute Maximum Ratings

*1

Input voltage
Error input voltage
Input-output voltage

*2

Output-COM voltage

*3

ON/OFF control valtage
Switching current
Power dissipation (No heat sink)
Power dissipation (With infinite heat sink)

*4

Junction temperature
Operating temperature
Storage temperature
Soldering temperature

*1

Voltage between V

*2

Voltage between V

*3

Voltage between V

*4

Overheat protection may operate at 125=<T

“ 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

V

IN

V

ADJ

Vi-o

OUT

V

V

C

SW

D1
D2

T

j
opr
stg

sol

-0.3 to 40

-20 to +80

-40 to +150

260 (For 10s)

IN

terminal and COM terminal.

OUT

terminal and COM terminal.

C

terminal and COM terminal.

j

=<150˚C

I
P
P

T

T
T

(Ta=25˚C)

40

7

41

-1

V
V
V
V
V

1.5

1.5
15

150

A
W
W
˚C
˚C
˚C
˚C

· Please refer to the chapter“ Handling Precautions ”.

Chopper Regulators PQ1CF2

■ Electrical Characteristics

Parameter Symbol Conditions UnitMAX.TYP.MIN.
Output saturation voltage
Reference voltage
Temperature fluctuation in reference voltage
Load regulation
Line regulation
Efficiency
Oscillation frequency
Oscillation frequency temperature fluctuation
Maximum duty
Overcurrent detecting level
Charge current

Input threshold voltage
On threshold voltage

Stand-by current
Output OFF-state consump-tion current

■ Block Diagram

1 VIN

Overcurrent

detection

circuit

Overheat
detection

circuit

Voltage

regulator

PWM COMP.

Q

F/F

R

S

ON/OFF

circuit

+

-

(Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A, VO=3V[R1=2kΩ]Ta=25˚C)

V

sat

V

ref

∆V

ref

|RegL|

eg

|R

η

fo

∆fo

MAX

D

I

L

I

CHG

V

THL

V

THH

V

THON

I

SD

I

qs

Oscillator

IO=1A,No L,D,C

j

=0 to 125˚C

T

O

=0.2 to 1A

I

IN

=8 to 35V

V

I|

O

=1A

I

j

=0 to 125˚C

T
4 terminal is open
No L,D,C
24 terminal is open
Duty=0%, 4terminal=0V, 5terminal
Duty=D

MAX

4terminal=0V,5terminal

IN

=40V, 4terminal=0V

V

IN

=40V, 5terminal=3V

V

↓

Soft start

+

-

V

ref

O

-

-

O

, 4terminal is open. 5terminal

2 VOUT

5 ON/OFF

4 O

ADJ

-

1.235

-

-

-

-

80

-

90

1.55

-15

1.95

3.25

1.05

-

-

0.9

1.26
±0.5

0.1

0.5
82

100

±2

-

2.0

-10

2.25

3.55

1.4

150

8

1.5

1.285

1.5

2.5

120

2.6

-5

2.55

3.85

1.75
400

12

V
V

-

%
%
%

-

%

kHz

-

-

%
%

A

µA

V
V
V

µA
mA

Fig.1 Test Circuit

●4

IN

C
100µF

●1 ●2

PQ1CF2

●3

I

SD

A

I

QS

V

IN

3 COM

L
210µH

R

●5

A

I

CHG

L : HK-14D100-2110 (made by Toho Co.)
D : ERC80-004 (made by Fuji electronics Co.)

2

D

R

1

1kΩ

2.2nF

++

C

O

470µF

I

O

V

Fig.2 Power Dissipation vs. Ambient

Temperature

20

15

O

Load

(W)

D

10

5

Power dissipation P

0

-20 0 20 40 60 10080

Note) Oblique line portion : Overheat

protection may operate in this area.

D1

:No heat sink

P
P

D2

:With infinite heat sink

D2

P

P

D1

Ambient temperature Ta (˚C)