Inverter Driver. FAN7311N Datasheet

FAN7311N Driver. Datasheet pdf. Equivalent


Fairchild Semiconductor FAN7311N
December 2007
FAN7311
LCD Backlight Inverter Drive IC
Features
„ High-Efficiency Single-Stage Power Conversion
„ Wide Input Voltage Range: 5V to 25.5V
„ Backlight Lamp Ballast and Soft Dimming
„ Reduced Number of Required External Components
„ Precision Voltage Reference Trimmed to 2%
„ ZVS Full-Bridge Topology
„ Soft-Start Capability
„ PWM Control at Fixed Frequency
„ Analog and Burst Dimming Function
„ Programmable Striking Frequency
„ Open-Lamp Protection
„ Open-Lamp Regulation
„ 20-Pin SSOP/SOIC/DIP
Applications
„ LCD TV
„ LCD Monitor
Description
The FAN7311 provides all the co ntrol fu nctions for a
series p arallel resonant co nverter as well as a pu lse
width m odulation (PWM) controller t o d evelop a s upply
voltage. T ypical op erating fre quency ran ge is bet ween
30kHz and 250kHz, depending on the cold cathode fluo-
rescent lamp (CCFL) and the transformer's characteris-
tics. FAN7311 uses a new proprietary phase-shift control.
20-SSOP
20-SOIC
1
1
20-DIP
1
Ordering Information
Part Number
FAN7311G
FAN7311GX
FAN7311M
FAN7311MX
FAN7311N
Package
20-SSOP
20-SSOP
20-SOIC
20-SOIC
20-DIP
Operating Temperature Range
-25°C to 85°C
Packing Method
Rail
Tape & Reel
Rail
Tape & Reel
Rail
All packages are lead free per JEDEC: J-STD-020B standard.
© 2006 Fairchild Semiconductor Corporation
FAN7311 Rev. 1.0.7
www.fairchildsemi.com


FAN7311N Datasheet
Recommendation FAN7311N Datasheet
Part FAN7311N
Description LCD Backlight Inverter Driver
Feature FAN7311N; FAN7311 — LCD Backlight Inverter Drive IC December 2007 FAN7311 LCD Backlight Inverter Drive IC F.
Manufacture Fairchild Semiconductor
Datasheet
Download FAN7311N Datasheet




Fairchild Semiconductor FAN7311N
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
D4
BAV70
TX2
R26
C14
1kΩ
10nF
0
0
C12
15pF
D3
BAV70
R12
1kΩ
C29
10nF
0
0
Figure 10. Typical Application Circuit
C11
15pF
OLP1
LTM190EX
1 HOT
2 COLD
CN2
CCFL
1 HOT
2 COLD
CN1
CCFL
OLP2
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
R11
C15
1kΩ
10nF
0
0
FB
D8
BAV99 R18
1kΩ
00
D9
BAV99 R19
1kΩ
0
0
FAN7311 Rev. 04
2. Transformer Schematic Diagram
- Supported by Namyang electronics (http://www.namyangelec.co.kr)
3. Core & Bobbin
„ Core: EFD2124
„ Material: PL7
„ Bobbin: EFE2124
4. Winding Specification
Pin No.
5 --> 2
7 --> 9
Wire
1 UEW 0.45 φ
1 UEW 0.04 φ
© 2006 Fairchild Semiconductor Corporation
FAN7311 Rev. 1.0.7
FAN7311 Rev. 04
Figure 11. Transformer Schematic
Turns
19
2300
Inductance
115 µH
1.5 H
Leakage Inductance
21.5µH
280mH
10
Remarks
1KHz, 1V
1KHz, 1V
www.fairchildsemi.com



Fairchild Semiconductor FAN7311N
© 2006 Fairchild Semiconductor Corporation
FAN7311 Rev. 1.0.7
15
www.fairchildsemi.com





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