FAN7311_07 Datasheet, PDF (10/16 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
3
4
5
6
7
8
9
10
12V
ON/OFF
12505WR-10
0
R24
10kΩ
DIM(0~3.3V)
C22
220μF
25V
0
C28
10nF
0
REF
R2
56kΩ
R4
22kΩ
C21
10nF
R3
18kΩ
0
0
IC1 FAN7311
OLP
RT1
C26 0.1μF
R6 82kΩ
0
RT
OLR
OUTB
OUTB
ENA
C1 0.22μF
0
S_S
OUTA
VIN
OUTA
C6 1μF
0
0
C2 1μF
0
GND
REF
PGND
OUTC
R7 0Ω
ADIM
BDIM
OUTD
CT
C3 4.7n
EA_IN
EA_OUT
RT
BCT
0
J1
0
C5 220pF
0
R5 27kΩ
0
C4 4.7nF
0
RT
R8
100kΩ
R9
9.1kΩ
0
R25
10kΩ
0
R27
10kΩ
M1
SN
DN
GN
DN
SP
DP
GP
DP
FDS8958A
M2
SN
DN
GN
DN
SP
DP
GP
DP
FDS8958A
C25
1μF
0
C7
10μF
C8
10μF
OLR
FB
R15
10kΩ
REF
OLP
Q1
R1
330kΩ
R14
100kΩ
0
C9
KST2222
1μF
D11
BAW56
D1
BAW56
R20
10kΩ
0
OLR
R22
10kΩ
OLP1
R23
10kΩ
OLP2
OLP3
R21
10kΩ
C19
OLP4 ^2.2nF
0
C20
2.2nF
0
OLR
0
D10
BAW56
C18
C17
2.2n
2.2n
0
0
C27
1μF
0
TX1
C10
15pF
C11
15pF
LTM190EX
1 _HOT
2 _COLD
CN2
CCFL
1 _HOT
2 _COLD
CN1
CCFL
OLP1
OLP2
D4
BAV70
TX2
R26
C14
1kΩ
10nF
0
0
C12
15pF
R13
C30
1kΩ
10nF
D6
BAV99
R16
1kΩ
D7
BAV99
R17
1kΩ
0
0
FB
0
0
0
0
C13
15pF
OLP3
1 _HOT
2 _COLD
CN4
CCFL
OLP4
1 _HOT
2 _COLD
CN3
CCFL
D3
BAV70
R12 C29
1kΩ
10nF
0
0
R11
C15
1kΩ
10nF
0
0
FB
D8
BAV99
R18
1kΩ
00
D9
BAV99
R19
1kΩ
0
0
FAN7311 Rev. 04
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
© 2006 Fairchild Semiconductor Corporation
FAN7311 Rev. 1.0.6
FAN7311 Rev. 04
Figure 11. Transformer Schematic
10
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