Data Sheet

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7319 • 1.0.1 21
FAN7319 — LCD Backlight Inverter Drive IC
Typical Half-Bridge Application Circuit (LCD Backlight Inverter)
Application Input Voltage Range Number of Lamps
LCD TV (LIPS Type) 13±10% CCFL/EEFL IP
Figure 48. Typical Half-Bridge Application Circuit
0
FAN7319
IC2
FAN 7319
20-SOIC
VOLP
REF
BDIM
ADIM
CMP
TIMER
RT
RT1 OUTB
OUTA
VIN
OLR
OLP
MODE
OVPR
ENA
SENSE
GND
OUTC
OUTD
VIN
VIN
D8
BAV70
SOT-23
R15
10k
R22
30k
R20
33
1W
R27
33
1W
R301
68R
C301
OPEN
R55
47k
ZD301
15V
SOD-123
C6
25pF/6KV
C5
680nF
600V
C24
2.2u
C15
10n
C401
OPEN
C402
1n
R58
33k
C52
82uF
450V
R304
1k
F1
FUSE
R30
open
C51
82uF
450V
C29
1u
C3
25pF/6KV
R52
4.7R
ZD401
15V
SOD-123
R59
0R
D10 BAV70
SOT-23
R28
OPEN
1W
C28
1n
R303
12k
R38
10k
R19
15k
R16 30k
C1
47uF
25V
Q301
Q2N2222A
SOT-23
CN4
CN_CCFL
1
1
2
2
R14
10k
C23
2.2u
M3
FDPF7N50F
TO-220F
D401
BAV70
SOT-23
R31
33k
R403
12k
CN2
12505WR-5
1
2
3
4
5
R57
100k
R12
10k
R302
1.8R
R44
10k
R305
12k
M4
FDPF7N50F
TO-220F
C302
1n
R401
68R
R56
22R
R402
1.8R
T3
C25
100n
C26
1n
D301
BAV70
SOT-23
C7
15n\
R60
OPEN
R21
OPEN
1W
R405
12k
Q401
Q2N2222A
SOT-23
C8
15n
C27
100n
R35
15k
CN3
CN_CCFL
1
1
2
2
R404
1k
R53
10k
R54
68k
T2
PFC_OUT(380Vdc)
OLP
SENSE
OLR
OUTB
OUTA
OUTA
OUTB
OLP
SENSE
OLR
0
0
0
R306
22R
0
0
0
REF
0
0
0
0
BDIM(External only)
VIN(10~24V)
0
Pulse
Trans form er
ENA
ADIM(Positive)
C11 22p
REF
R307
22R
R33
open
C16
1n
R34
30k