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PDF FAN7318B Data sheet ( Hoja de datos )
| Número de pieza | FAN7318B | |
| Descripción | LCD Backlight Inverter Drive IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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August 2009
FAN7318B
LCD Backlight Inverter Drive IC
Features
High-Efficiency Single-Stage Power Conversion
Wide Input Voltage Range: 6V to 30V
Backlight Lamp Ballast and Soft Dimming
Minimal External Components Required
Precision Voltage Reference Trimmed to 2%
Half-Bridge Topology
Soft-Start
PWM Control at Fixed Frequency
Analog Dimming Function
Burst Dimming Function
Programmable Striking Frequency
Open-Lamp Protection
Open-Lamp Regulation
Over-Voltage Protection
Short-Lamp Protection
CMP-High Protection
Thermal Shutdown
www.DataSheet24U0-.cPoinmSOIC
Applications
LCD TV
LCD Monitor
Description
The FAN7318B is a LCD backlight inverter drive IC that
controls P-N half-bridge topology.
The FAN7318B provides a low-cost solution and reduces
external components by integrating proprietary wave
rectifiers for open-lamp protection and regulation. The
operating voltage range of the FAN7318B is wide, so an
external regulator isn’t necessary to supply the voltage to
the IC.
The FAN7318B provides various protections, such as
open-lamp regulation, over-voltage protection, open-
lamp protection, short-Lamp protection, CMP-high
protection, to increase the system reliability. The
FAN7318B provides burst dimming and analog dimming.
The FAN7318B is available in a 20-SOIC package.
Ordering Information
Part
Number
Operating
Temperature
Package
FAN7318BM
FAN7318BMX
-25 to +85°C
20-Lead, Small Outline Integrated Circuit (SOIC)
Eco
Status
RoHS
Packing
Method
Rail
Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Protected under U.S. patent no. 5,652,479.
© 2009 Fairchild Semiconductor Corporation
FAN7318B • 1.0.0
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In
addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min.
Max.
Unit
VIN IC Supply Voltage
6 30 V
TA Operating Temperature Range
-25 +85 °C
TJ Operating Junction Temperature
+150
°C
TSTG
θJA
Storage Temperature Range
Thermal Resistance Junction-Air(1,2)
-65 +150 °C
90 °C/W
PD Power Dissipation
1.4 W
Notes:
1. Thermal resistance test board; size: 76.2mm x 114.3mm x 1.6mm (1S0P); JEDEC standard: JESD51-2, JESD51-3.
2. Assume no ambient airflow.
Pin Breakdown Voltage
Pin #
1
2
3
4
5
6
7
www.DataSheet4U.com 8
9
10
11
12
13
14
15
16
17
18
19
20
Name
TIMER
CMP
ADIM
CT
REF
BCT
BDIM
ENA
GND
OUTB
OUTA
VIN
OLR4
OLP4
OLR3
OLP3
OLR2
OLP2
OLR1
OLP1
Value
7
7
7
7
7
7
7
7
30
30
30
±7
±7
±7
±7
±7
±7
±7
±7
Unit
V
© 2009 Fairchild Semiconductor Corporation
FAN7318B • 1.0.0
5
www.fairchildsemi.com
5 Page 
Typical Performance Characteristics (Continued)
Figure 15. BCT High Voltage vs. Temperature
Figure 16. BCT Low Voltage vs. Temperature
www.DataSheeFti4gUu.croem17. Analog Dimming Reference Voltage 0
vs. Temperature
Figure 18. Analog Dimming Reference Voltage 05
vs. Temperature
Figure 19. Error Amplifier Source Current 1
vs. Temperature
Figure 20. Error Amplifier Source Current 2
vs. Temperature
© 2009 Fairchild Semiconductor Corporation
FAN7318B • 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet FAN7318B.PDF ] | |
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