FAN7314AMX [FAIRCHILD]
LCD Backlight Inverter Drive IC; LCD背光逆变器驱动IC
| 型号： | FAN7314AMX |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | LCD Backlight Inverter Drive IC |
| 文件： | 总3页 (文件大小：491K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 2008
FAN7314A — LCD Backlight Inverter Drive IC
Features
Description
The FAN7314A 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.
High-Efficiency Single-Stage Power Conversion
Wide Input Voltage Range: 6V to 25.5V
Backlight Lamp Ballast and Soft Dimming
Minimal Required External Components
Precision Voltage Reference Trimmed to 2%
ZVS Half-Bridge Topology
The FAN7314A is available in a 20-SOIC package.
Soft-Start
PWM Control at Fixed Frequency
Analog and Burst Dimming Function
Programmable Striking Frequency
Open-Lamp Protection
Open-Lamp Regulation
Thermal Shutdown
20-Pin SOIC
Applications
LCD TV
LCD Monitor
Ordering Information
Part Number
Package
Operating Temperature
Packing Method
Eco Status
FAN7314AM
20-SOIC
20-SOIC
-25 to +85°C
-25 to +85°C
RoHS
RoHS
RAIL
FAN7314AMX
TAPE & REEL
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Protected under U.S. patent nos. 5,652,479.
Important Note:
For complete performance specifications, please contact one of the following:
NA(TX)
EU(UK)
KR
Jinho Choi
Justin Ahn
KI Jeon
jinho.choi@fairchildsemi.com
1-972-447-1316
+44(0)1793-856 828
02-3498-0543
Justin.Ahn@Fairchildsemi.com
Kwangil.Jeon@fairchildsemi.co.kr
seunghwan.lee@fairchildsemi.com
Yasuhiko.Itoh@fairchildsemi.com
AP(HK)
JP
SH Lee
852-2722-8372
03-5275-8380
Yasuhiko Itoh
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
www.fairchildsemi.com
Typical Application Circuit (LCD Backlight Inverter)
Application
Device
Input Voltage Range
Number of lamps
22-Inch LCD Monitor
FAN7314A
22V±5%
4
1. Features
High-Efficiency Single-Stage Power Conversion
P-N Half-Bridge Topology
Reduces Required External Components
Enhanced System Reliability through Protection Functions
C820
1u, 50V
C601
C602
CN603
470u, 35V
470u, 35V
T602S
R619
100n
S1
G1
S2
G2
D1
D2
RT
1
2
3
4
5
6
7
8
9
OLP
RT1 20
OUTB 19
OUTA 18
VIN 17
R619
51k
22.5V
OLR
ENA
S_S
R612
10k
R634
10k
ENA
OLP1
D606
OLP2
D607
BAV99
C625
1u, 50V
C603
5p, 3kV
C604
5p, 3kV
C622
0.22u
D608
BAV70
BDIM
ADIM
Q601
FDD8424H
R633
1k
BAV99
R632
1k
GND
REF
PGND 16
OUTC 15
OUTD 14
CT 13
C621
1u
R631
1k
OLR
C643
R610
24k
C642
3.9n//220p
3.9n//220p
R628
1k
R615
33k
ADIM
BDIM
EA_IN
C651
C652
10u, 25V
C614
220p
REF
10u, 25V
C610
10n
FB
R611
9.1k
R613
30k
RT 12
C616
3.9n
CN604
10 EA_OUT
BCT 11
RT
COP2
33n
R616
150k
R621
5.1k
FB
R601
270k
COP1
1n
R617
10.7k
OLP3
OLP4
C605
C606
OLR
5p, 3kV
5p, 3kV
D608
BAV70
D603
BAV99
D605
BAV99
R620
1k
C623
1n
R618
100k
REF
R614
330k
Q602
KST2222A
R627
1k
D609
BAW56
R623
1k
OLR
R629
C627
3.9n//220p
C628
3.9n//220p
10k
R626
1k
OLP3
OLP4
C624
1u
R630
10k
C641
2.2n
C640
2.2n
D604
BAW56
FB
R625
10k
OLP2
OLP1
D601
BAW56
R624
10k
C630
2.2n
C629
2.2n
Figure 9. Typical Application Circuit
2. Transformer Specifications
Supported by Clover Hitech (http://www.cloverhitech.com)
PART NO : EEL-22W
Pin No.
2 Æ 7
3 Æ 6
1 Æ 8
4 Æ 5
Wire
Turns
Inductance
Leakage Inductance
Remarks
UTSC 0.1×12
19
83.0µH
16µH
1kHz, 1V
2300
1.4H
280mH
1 UEW 0.04Ω
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
www.fairchildsemi.com
11
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
www.fairchildsemi.com
15
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