FAN7314A IC Datasheet

FAN7314A Datasheet, PDF, Equivalent


Part Number

FAN7314A

Description

LCD Backlight Inverter Drive IC

Manufacture

Fairchild Semiconductor

Total Page 3 Pages
Datasheet
Download FAN7314A Datasheet


FAN7314A
June 2008
FAN7314A — LCD Backlight Inverter Drive IC
Features
ƒ High-Efficiency Single-Stage Power Conversion
www.DataSheet4Uƒ.comWide Input Voltage Range: 6V to 25.5V
ƒ Backlight Lamp Ballast and Soft Dimming
ƒ Minimal Required External Components
ƒ Precision Voltage Reference Trimmed to 2%
ƒ ZVS Half-Bridge Topology
ƒ Soft-Start
ƒ PWM Control at Fixed Frequency
ƒ Analog and Burst Dimming Function
ƒ Programmable Striking Frequency
ƒ Open-Lamp Protection
ƒ Open-Lamp Regulation
ƒ Thermal Shutdown
ƒ 20-Pin SOIC
Applications
ƒ LCD TV
ƒ LCD Monitor
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.
The FAN7314A is available in a 20-SOIC package.
Ordering Information
Part Number Package
Operating Temperature
Eco Status Packing Method
FAN7314AM
FAN7314AMX
20-SOIC
20-SOIC
-25 to +85°C
-25 to +85°C
RoHS
RoHS
RAIL
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)
Jinho Choi
jinho.choi@fairchildsemi.com
EU(UK)
Justin Ahn
Justin.Ahn@Fairchildsemi.com
KR KI Jeon
Kwangil.Jeon@fairchildsemi.co.kr
AP(HK)
SH Lee
seunghwan.lee@fairchildsemi.com
JP Yasuhiko Itoh
Yasuhiko.Itoh@fairchildsemi.com
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
1-972-447-1316
+44(0)1793-856 828
02-3498-0543
852-2722-8372
03-5275-8380
www.fairchildsemi.com

FAN7314A
Typical Application Circuit (LCD Backlight Inverter)
Application
22-Inch LCD Monitor
Device
FAN7314A
Input Voltage Range
22V±5%
Number of lamps
4
1. Features
ƒ High-Efficiency Single-Stage Power Conversion
ƒ P-N Half-Bridge Topology
ƒ Reduces Required External Components
ƒ Enhanced System Reliability through Protection Functions
www.DataSheet4U.com
22.5V
ENA
BDIM
ADIM
C601
470u, 35V
C602
470u, 35V
C820
1u, 50V
R612
10k
1 OLP
2 OLR
C622
0.22u
3
4
ENA
S_S
RT1 20
OUTB 19
OUTA 18
VIN 17
R619
100n
RT
R619
51k
C625
1u, 50V
S1 D1
G1
S2
R634
10k G2
D2
Q601
FDD8424H
R610
24k
C621
1u
5
6
GND
REF
PGND 16
OUTC 15
R615
33k
R611
9.1k
C610
10n
REF
R601
270k
7 ADIM
8 BDIM
OUTD 14 C614
CT 13 220p
9 EA_IN
RT 12
10 EA_OUT
BCT 11
COP2
33n
R616
150k
COP1
1n
C651
10u, 25V
R613
30k
C616
3.9n
RT
R621
5.1k
R617
10.7k
C652
10u, 25V
FB
T602S
C624
1u
REF
Q602
KST2222A
R614
330k
D609
BAW56
D601
BAW56
D604
BAW56
C641
2.2n
C630
2.2n
C623
1n
C640
2.2n
C629
2.2n
R618
100k
R629
10k
R630
10k
R625
10k
R624
10k
OLR
OLP3
OLP4
OLP2
OLP1
CN603
OLR
D608
BAV70
R632
1k
C603
5p, 3kV
R633
1k
C604
5p, 3kV
OLP1
D606
BAV99
C642
3.9n//220p
C643
3.9n//220p
OLP2
D607
BAV99
R628
1k
R631
1k
FB
CN604
OLR
D608
BAV70
R627
1k
C605
5p, 3kV
R620
1k
C606
5p, 3kV
OLP3
D603
BAV99
C628
3.9n//220p
C627
3.9n//220p
OLP4
D605
BAV99
R626
1k
R623
1k
FB
Figure 9. Typical Application Circuit
2. Transformer Specifications
ƒ Supported by Clover Hitech (http://www.cloverhitech.com)
ƒ PART NO : EEL-22W
Pin No.
2Æ7
3Æ6
1Æ8
4Æ5
Wire
UTSC 0.1×12
1 UEW 0.04Ω
Turns
19
2300
Inductance Leakage Inductance
83.0µH
16µH
1.4H
280mH
Remarks
1kHz, 1V
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
11
www.fairchildsemi.com


Features FAN7314A — LCD Backlight Inverter Driv e IC June 2008 FAN7314A — LCD Backl ight Inverter Drive IC Features www.Dat aSheet4U.com 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 characte ristics. The FAN7314A is available in a 20-SOIC package. ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ High-Efficiency Single-Stage Power Conversion Wide Inpu t Voltage Range: 6V to 25.5V Backlight Lamp Ballast and Soft Dimming Minimal R equired External Components Precision V oltage Reference Trimmed to 2% ZVS Half -Bridge Topology Soft-Start PWM Control at Fixed Frequency Analog and Burst Di mming Function Programmable Striking Fr equency Open-Lamp Protection Open-Lamp Regulation Thermal Shutdown 20-Pin SOIC Applications ƒ ƒ LCD TV LCD Monitor Ordering Information Part Number FAN7314AM.
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