PQ2CF1 Ver la hoja de datos (PDF) - Sharp Electronics

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PQ2CF1

TO-220 Package, Step Up Output Chopper Regulator

Sharp Electronics 

Chopper Regulators

PQ2CF1

s Electrical Characteristics

Parameter

Output saturation voltage

Reference voltage

Reference voltage temperature fluctuation

Load regulation

Line regulation

Efficiency

Oscillation frequency

Oscillation frequency temperature fluctuation

Maximum duty

Over current detecting level

Charge current 1

Charge current 2

Input threshold voltage

Vc terminal low level voltage

Vc terminal high level voltage

On threshold voltage

Symbol

VSAT

Vref

∆Vref

| RegL |

| RegI |

η

fo

∆fo

DMAX

IL

ICHG1

ICHG2

VTHL

VCH

VCL

VTHON

Stand-by current

ISD

Output OFF-state dissipation current

IqS

s Block Diagram

VIN

2

(Unless otherwise specified, conditions shall be VIN=5V,Io=0.2A,Vo=12V, Ta=25˚C)

Conditions

MIN. TYP. MAX. Unit

ISW=2A

––

0.6

1.2

V

––

1.235

1.26

1.285

V

Tj=0 to 125˚C

––

±0.5

––

%

IO=70 to 570mA

––

0.1

1.5

%

VIN=3.5 to 10V

––

0.2

1.5

%

IO=0.5A

––

85

––

%

––

40

50

60

kHz

Tj=0 to 125˚C

––

±5

––

%

5 terminal is open

90

––

––

%

Duty=50%,

2.7

4.4

5.8

A

4 terminal=0V, 4 terminal

–80

–50

–20

µA

4 terminal=0.5V, 4 terminal

–150

–100

–50

µA

Duty=0%, 4 terminal

0.55

0.75

0.95

V

1 terminal is open, 5 terminal=1.1V 1.65

1.85

2.05

V

1 terminal is open, 5 terminal=1.4V

0.3

0.45

0.6

V

1 terminal is open, 4 terminal

0.1

0.2

0.3

V

VIN=35V, 4 terminal=0V,No L,CO,

D,R1,R2

––

270

400

µA

VIN=35V, 4 terminal=0.5V,No L,

CO,D,R1,R2

––

4.0

12

mA

Vsw

1

F/F

Voltage

regulator

circuit

RQ

S

Oscillator

+

Amp.

COMP.

–

+

Error amp.

Low voltage Overcurrent Overheat

malfunction protection protection

prevention circuit circuit

circuit

ON/OFF

circuit

Soft start

4

VC

Vref

5 OADJ

3

COM

Fig. 1 Test Circuit

ISD

IQS A

VIN

L

90µH

D

21

R2

+ CIN

100µF

4 PQ2CF1 3

1kΩ

R1

0.047µF

3

1kΩ

IO VO

+

CO

470µF

L : HK-12S100-9000 (made by Toho Co.)

D : ERC80-004 (made by Fuji electronics Co.)

Fig. 2 Power Dissipation vs. Ambient

Temperature

20

PD1 :No heat sink

PD2 :With infinite heat sink

15

PD2

;; 10

;; 5

;; PD1

0

;; –20 0 20 40 60 80 100

Ambient temperature Ta (˚C)

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

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