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Fairchild Semiconductor Electronic Components Datasheet

FAN7314 Datasheet

LCD Backlight Inverter Drive IC

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FAN7314 pdf
FAN7314
LCD Backlight Inverter Drive IC
October 2007
Features
„ High-Efficiency Single-Stage Power Conversion
„ Wide Input Voltage Range: 5V to 25.5V
„ Back Light Lamp Ballast and Soft Dimming
www.DataSheet4U.c„omReduces Number of Required External Components
„ Precision Voltage Reference Trimmed to 2%
„ ZVS Half-Bridge Topology
„ Soft Start
„ PWM Control at Fixed Frequency
„ Analog and Burst Dimming Function
„ Programmable Striking Frequency
„ Open-Lamp Protection
„ Open-Lamp Regulation
„ 20-Pin SOIC
Description
The FAN7314 provides all the control functions for a
series parallel resonant converter as well as a pulse
width modulation (PWM) controller to develop a supply
voltage. Typical operating frequency range is between
30kHz and 250kHz, depending on the CCFL and the
transformer's characteristics.
20-SOIC
Ordering Information
Part Number
FAN7314M
FAN7314MX
Package
20-SOIC
20-SOIC
Operating Temperature Range
-25°C ~ 85°C
All packages are lead free per JEDEC J-SDD-020B standard.
Protected by U.S. Patent: 5,652,479.
Packing Method
Rail
Tape & Reel
© 2006 Fairchild Semiconductor Corporation
FAN7314 Rev. 1.0.4
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FAN7314 Datasheet

LCD Backlight Inverter Drive IC

No Preview Available !

FAN7314 pdf
Typical Application Circuit
Application
19 inch LCD Monitor
Lamps
4
Input Voltage
13V
1. Schematic
F1
FUSE
C22
220μF
25V
CN5
1
2 13V
3
4
5
6
7
www.DataSheet4U.com
8
9
ON/OFF
10
12505WR-10
0
0
R24
10kΩ
C28
10nF
0
DIM(0~3.3V)
REF
R2
56kΩ
R4
22kΩ
C21
10nF
0
R3
18kΩ
0
IC1 FAN7314
C26 0.1μF
0
R6 82kΩ
OLP RT1
RT
OLR
OUTB
OUTB
ENA
OUTA
OUTA
C1 0.22μF
0 S_S
C6 1μF
VIN 0
0
R25
10kΩ
0
0 C2 1μF
GND
REF
PGND
OUTC
R7 0Ω
ADIM
BDIM
OUTD
CT
EA_IN
RT
C3
4.7nF
EA_OUT BCT
R8
0
C5 220pF
0
R5 27kΩ 0
C4 4.7nF 0
RT
J1
0Ω
0
R27
10kΩ
R15
100kΩ
10kΩ
R9
9.1kΩ
M1
SN DN
GN DN
SP DP
GP
FDS8958A
M2
DP
SN DN
GN DN
SP DP
GP
FDS8958A
DP
FB
OLP
REF
R1
330kΩ
C9
1μF
Q1
KST2222
D1
BAW56
0
R14
100kΩ
0
D11
BAW56
OLR
0
OLP1
R22
10kΩ
OLP2
R23
10kΩ
OLP3
R20
10kΩ
OLP4
R21
10kΩ
D10
BAW56
C18
2.2nF
0
C17
2.2nF
0
C19
2.2nF
0
C20
2.2nF
0
C25
1μF
0
C27
1μF
0
C7
10μF
C8
10μF
TX1
0
OLR
TX2
0
OLR
2. Transformer Schematic Diagram
Supported by Namyang electronics (http://www.namyangelec.co.kr)
C10
15pF
LTM190EX
C11
15pF
OLP1
1 HOT
2 COLD
CN2
CCFL
OLP2
1 HOT
CN1
CCFL
2 COLD
D4
BAV70
R26
1kΩ
C14
10nF
00
C12
15pF
C30
R13 10nF
1kΩ
D6
BAV99
R17
1kΩ
D7
BAV99
R16
1kΩ
00
00
00
FB
C13
15pF
1 HOT
2 COLD
CN4
CCFL
1 HOT
CN3
CCFL
2 COLD
OLP3
OLP4
D3
BAV70
R12
1kΩ
C29
10nF
00
R11 C15
1kΩ 10nF
00
D8
BAV99
R18
1kΩ
00
D9
BAV99
R19
1kΩ
00
FB
FAN7314 Rev. 02
3. Core & Bobbin
„ Core: EFD2124
„ Material: PL7
„ Bobbin: EFE2124
© 2006 Fairchild Semiconductor Corporation
FAN7314 Rev. 1.0.4
FAN7314 Rev. 02
www.fairchildsemi.com
10


Part Number FAN7314
Description LCD Backlight Inverter Drive IC
Maker Fairchild Semiconductor
Total Page 3 Pages
PDF Download
FAN7314 pdf
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