FAN7311B Datasheet, PDF (10/14 Pages) Fairchild Semiconductor – LCD Backlight Inverter Drive IC

Typical Application Circuits
Application
19-inch LCD Monitor
Lamps
4
Input Voltage
13V
1. Schematic
F1
FUSE
CN5
1
2
12V
3
4
5
6
7
8
R24
9
ON/OFF
10
10k
12505W R -10
0
DIM (0~3.3V )
C22
220u
25V
0
C28
10n
0
REF
R4
56k
C21
10n
R2
56k
R3
75k
0
0
IC1 FAN7311B
OLP
R T1
OLR
OUTB
C1
0
0.22u
0
C2
0
1u
R7 0
ENA
S_S
GND
REF
ADIM
BDIM
OUTA
VIN
PGND
OU TC
OU TD
CT
C3
4.7n
EA_IN
EA_OU T
RT
BC T
R8
100k
C 26
R61n
56k
OUTB
0
RT
OUTA
C6
0
1u
0
J1
0
C5 220p
0
R5 27k
0
C4 4.7n
0
RT
R9
9.1k
0
R 25
10k
0
R 27
10k
M1
SN
DN
GN
DN
SP
DP
GP
DP
F D S8958A
M2
SN
DN
GN
DN
SP
DP
GP
DP
F D S8958A
R15
FB
10k
REF
OLP
Q1
R1
330k
C9
KST2222
1u
D1
BAW56
0
R14
100k
0
D11
BAW56
R20
10k
D10
BAW56
C18
2. 2n
0
OLR
OLP3
R21
10k
C17
2. 2n
0
0
R22
10k
C 19
OLP4 ^2.2n
0
OLP1
R 23
10k
C 20
2.2n
0
OLP2
C25
1u
0
C7 10u
C8 10u
OLR
OLR
C27
1u
0
TX1
C10
C11
15p
15p
L TM 190EX
1 _HOT
2 _COLD
CN2
CCFL
1
H OT
2 _{C OLD}
CN1
CCFL
O LP1
OLP2
D4
BAV70
R26
C14
1k
12n
R13
C30
1k
12n
D6
BAV99
R 16
1k
D7
BAV99
R 17
1k
0
0
0
0
0
0
0
0
FB
TX2
C12
C13
15p
15p
1
HOT
2 _COLD
CN4
CCFL
1 _{H OT}
2 _{C OLD}
CN3
CCFL
O LP3
OLP4
D3
BAV70
R1 2 C29
1k
12n
0
0
R11 C1 5
1k
12n
0
0
FB
D8
BAV99
R 18
1k
00
D9
BAV99
R 19
1k
0
0
Figure 10. Typical Application Circuit
2. Transformer Schematic Diagram
- Supported by Namyang electronics (http://www.namyangelec.co.kr)
3. Core & Bobbin
„ Core: EFD2124
„ Material: PL7
„ Bobbin: EFE2124
© 2007 Fairchild Semiconductor Corporation
FAN7311B Rev. 1.0.0
FAN7311 Rev. 04
Figure 11. Transformer Schematic
10
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