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Part Name
Description
FAN7310 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
FAN7310
LCD Backlight Inverter Drive Integrated Circuit
Fairchild Semiconductor
FAN7310 Datasheet PDF : 3 Pages
1
2
3
Typical Application
V
CC
C25
100µF
ENA
0
R24
10k
Ω
C28
10nF
0
REF
R2
R4 56k
Ω
22k
Ω
DIM(0~3.3V)
C21
10nF
R3
20k
Ω
00
IC1
FAN7310
OLP
RT1
OLR OUTB
ENA OUTA
R6
100k
Ω
0
OUTB
OUTA
0
C1
0
1µF
0
REF
C2
1µF(X7R)
S_S
V
IN
GND PGND
REF OUTC
ADIM OUTD
0
C6
1µF
0
OUTC
OUTD
BDIM CT
C5
0
220pF
EA_IN RT
R5
0
27k
Ω
EA_OUT BCT
C3
4.7nF
C4
4.7nF
0
R8
100k
Ω
R25
10k
Ω
C27
1µF
C22
R26
1µF
0
10k
Ω
0
M1
FDS8958A
M2
FDS8958A
0
0
FB
R15
R9
8.2k
Ω
2k
Ω
TX1
C7
10µF
0
C10
15pF
CCFL
OLP1
OLR
D4
BAV99
FB
C14
20nF
00
D6
BAV99
R16
1.5k
Ω
00
OLP
R1
330k
Ω
OLP1
R22
10k
Ω
0
R14 C16
100k
Ω
2.2nF
00
OLR
C9
1µF
0
Q1
D11
KST2222 D1N4148
C19
2.2nF
D1
D1N4148
0
FAN7310 Rev. 05
Figure 1. Application Circuit for CCFL
Internal Block Diagram
RT
OSCILLATOR
max. 2V
min. 0.5V
CT
SYNC
-
S_S
+
+
Output
Control
Logic
Output
Driver
Output
Driver
OUTA
OUTB
PGND
OUTC
OUTD
EA_OUT
6
μ
A
S_S
ADIM
EA_IN
max. 2V
BCT
BDIM
AGND
min. 0.5V
Error Amp.
+
+
-
UVLO
Q
SET
S
Q
CLR
R
1.4
μ
A
+
-
2V
UVLO
S
olr
105
μ
A
S
burst
85
μ
A
-
S
burst
+
Voltage
Reference
&
Internal
Bias
UVLO
S
olr
2.5V
REF
V
IN
+
-
+
- 2V
+
-
UVLO 5V
OLP
2.7V
OLR
REF
1.4V
ENA
V
IN
Figure 2. Functional Block Diagram
FAN7310 Rev.03
© 2005 Fairchild Semiconductor Corporation
FAN7310 Rev. 1.0.3
2
www.fairchildsemi.com
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