Data Sheet

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7319 • 1.0.1 20
FAN7319 — LCD Backlight Inverter Drive IC
Typical Full-Bridge Application Circuit (LCD Backlight Inverter)
Application Input Voltage Range Number of Lamps
LCD TV (LIPS Type) 13±10% CCFL/EEFL IP
Figure 47. Typical Full-Bridge Application Circuit
R107
22R
R108
22R
R109
22R
R39
1k
R40
open
VIN
VIN
R205
12k
R56
22R
R35
15k
C23
2.2u
R404
1k
R31
51k
C27
100n
D101
BAV70
SOT-23
C25
100n
T1
D201
BAV70
SOT-23
F1
FUSE
C52
100uF
450V
R58
33k
C102
1n
R30
82k
D10 BAV70
SOT-23
R302
1.8R
C51
100uF
450V
R59
OPEN
R12
10k
FAN7319
IC2
FAN7319
20-SOIC
VOLP
REF
BDIM
ADIM
CMP
TIMER
RT
RT1 OUTB
OUTA
VIN
OLR
OLP
MODE
OVPR
ENA
SENSE
GND
OUTC
OUTD
M2
FDPF7N50F
TO-220F
R19
15k
C401
OPEN
R303
12k
R21
OPEN
1W
Q301
Q2N2222A
SOT-23
R20
33
1W
C11 22p
ZD301
open
SOD-123
R55
47k
C5
680nF
600V
C29
1u
D401
BAV70
SOT-23
C6
27pF/6KV
Q201
Q2N2222A
SOT-23
C24
2.2u
CN3
CN_CCFL
1
1
2
2
C8
15n
Q401
Q2N2222A
SOT-23
CN2
12505WR-5
1
2
3
4
5
R305
12k
R22
30k
R401
68R
R204
1k
R105
12k
R34
30k
R57
100k
C28
1n
CN4
CN_CCFL
1
1
2
2
ZD101
open
SOD-123
C202
1n
R101
68R
T2
R301
68R
R14
10k
T3
R203
12k
R202
1.8R
R5310k
R16 30k
R28
OPEN
1W
M1
FDPF7N50F
TO-220F
C302
1n
C402
1n
R104
1k
R304
1k
Q101
Q2N2222A
SOT-23
R33
open
M3
FDPF7N50F
TO-220F
R102
1.8R
ZD201
open
SOD-123
ZD401
open
SOD-123
R405
12k
C15
4.7n
C26
1n
C1
47uF
25V
R403
12k
R27
33
1W
R103
12k
R60
0R
C3
27pF/6KV
R201
68R
C201
OPEN
C101
OPEN
M4
FDPF7N50F
TO-220F
R44
10k
D8
BAV70
SOT-23
R52
4.7R
C7
15n\
R15
10k
D301
BAV70
SOT-23
R38
10k
R54
68k
R402
1.8R
C301
OPEN
PFC_OUT(380Vdc)
OUTD
OUTC
OLR
OLP
OUTA
SENSE
OUTD
OUTB
OUTB
OUTC
SENSE
OUTA
OLR
OLP
0
0
0
0
REF
0
0
0
0
0
0
0
REF
0
ENA
ADIM(Positive)
BDIM(Exte rnal only)
VIN(10~24V)
Pulse
Transformer
K=0.98
L1 = 700uH / L2 = 400uH
Pulse
Transformer
C16
1n
R106
22R