© 2006 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN7311 Rev. 1.0.6

10

Typical Application Circuits

1. Schematic

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

19-inch LCD Monitor

4

13V

0

OLP1

R16

1kΩ

D3

BAV70

R17

1kΩ

0

0

C11

15pF

0

C30

10nF

0

0

C2

TX1

0

0

C21

10nF

R6

82kΩ

J1

0

C8

10μF

C25

1μF

0

0

0

0

C28

10nF

D9

BAV99

D7

BAV99

D6

BAV99

0

0

0

OUTA

R9

9.1kΩ

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

220μF

25V

OLR

C26 0.1μF

0

RT

OLP

D11

BAW56

D10

BAW56

SN

GN

SP

GP

DP

DP

DN

DN

M2

FDS8958A

REF

R14

100kΩ

OUTB

D1

BAW56

RT

FB

R1

330kΩ

LTM190EX

C6

0

OLP2

OLP1

OLP3

OLP4

R12

1kΩ

R11

1kΩ

R26

1kΩ

REF

R13

1kΩ

0

0

0

0

R15

10kΩ

C9

1μF

F1

FUSE

C7

10μF

1

2

3

4

5

6

7

8

9

10

CN5

12505WR-10

R24

10kΩ

R25

10kΩ

C10

15pF

C14

10nF

C12

15pF

C29

10nF

IC1

FAN7311

S_S

GND

REF

OLR

ENA

BDIM

OLP

VIN

OUTA

PGND

OUTB

RT1

CT

OUTC

ADIM

EA_IN

EA_OUT

OUTD

RT

BCT

R22

10kΩ

R23

10kΩ

C19

2.2nF

C20

2.2nF

0

0

0

0

R21

10kΩ

R20

10kΩ

C18

2.2n

C17

2.2n

0

R8

100kΩ

Q1

KST2222

C15

10nF

0

C27

1μF

0

0

R18

1kΩ

R7 0Ω

0

SN

GN

SP

GP

DP

DP

DN

DN

M1

FDS8958A

FB

0

TX2

0

C13

15pF

0

OLP3

OLP4

R19

1kΩ

OLR

R27

10kΩ

ON/OFF

12V

DIM(0~3.3V)

0

C4

4.7nF

C5

220pF

R5

27kΩ

0

R2

56kΩ

R3

18kΩ

R4

22kΩ

0

0

C3 4.7n

D4

BAV70

C1 0.22μF

D8

BAV99

0

OLP2

0

OLR

FB

FAN7311 Rev. 04

FAN7311 Rev. 04