© 2007 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN7311B Rev. 1.0.0

10

Typical Application Circuits

19-inch LCD Monitor

4

13V

1. Schematic

0

OLP1

R16

1k

D3

BAV70

R17

1k

0

0

C11

15p

0

C30

12n

0

0

C2

1u

TX1

0

0

C21

10n

R6

56k

J1

0

C8 10u

C25

1u

0

0

0

0

C28

10n

D9

BAV99

D7

BAV99

D6

BAV99

0

0

0

OUTA

R9

9.1k

0

0

HOT

1

COLD

2

CN1

CCFL

HOT

1

COLD

2

CN2

CCFL

HOT

1

COLD

2

CN4

CCFL

HOT

1

COLD

2

CN3

CCFL

C22

220u

25V

OLR

C26

1n

0

RT

OLP

D11

BAW56

D10

BAW56

SN

GN

SP

GP

DP

DP

DN

DN

M2

FDS8958A

REF

R14

100k

OUTB

D1

BAW56

RT

FB

R1

330k

LTM190EX

C6

1u

0

OLP2

OLP1

OLP3

OLP4

R1 2

1k

R11

1k

R26

1k

REF

R13

1k

0

0

0

0

R15

10k

C9

1u

F1

FUSE

C7 10u

1

2

3

4

5

6

7

8

9

10

CN5

12505WR-10

R24

10k

R25

10k

C10

15p

C14

12n

C12

15p

C29

12n

S_S

GND

REF

OLR

ENA

BDIM

OLP

VIN

OUTA

PGND

OUTB

RT1

CT

OUTC

ADIM

EA_IN

EA_OUT

OUTD

RT

BCT

R22

10k

R23

10k

C19

2.2n

C20

2.2n

0

0

0

0

R21

10k

R20

10k

C18

2.2n

C17

2.2n

0

R8

100k

Q1

KST2222

C1 5

12n

0

C27

1u

0

0

R18

1k

R7 0

0

SN

GN

SP

GP

DP

DP

DN

DN

M1

FDS8958A

FB

0

TX2

0

C13

15p

0

OLP3

OLP4

R19

1k

OLR

R27

10k

ON/OFF

12V

DIM (0~3.3V)

0

C4 4.7n

C5 220p

R5 27k

0

R2

56k

R3

75k

R4

56k

0

0

C3

4.7n

D4

BAV70

C1

0.22u

D8

BAV99

0

OLP2

0

OLR

FB

Figure 10. Typical Application Circuit

2. Transformer Schematic Diagram

- Supported by Namyang electronics (http://www.namyangelec.co.kr)

Figure 11. Transformer Schematic

3. Core & Bobbin

Core: EFD2124

Material: PL7

Bobbin: EFE2124

Application

Lamps

Input Voltage

FAN7311 Rev. 04