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Fairchild Semiconductor Electronic Components Datasheet

FAN7315 Datasheet

LCD Backlight Inverter Drive IC

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FAN7315
LCD Back Light Inverter Drive IC
www.fairchildsemi.com
Features
• Wide Dimming Range
www.DataSheet4U.comABunrasltodgimdimmimngin(g>(120.50
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:
1
1
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)
• High Efficiency Single Stage Power Conversion
• Wide Input Voltage Range 7.4V to 20V
• Back Light Lamp Ballast and Soft Dimming
• Few External Components
• Precision Voltage Reference Trimmed to 2%
• ZVS full-bridge topology
• Soft Start
• PWM Control at fixed frequency
• Analog, Burst Dimming Function
• Open Lamp Protection
• Open Lamp Regulation
• Short Lamp Protection
• Thermal Protection
• 20 Pin SSOP
Description
The FAN7315 provides all the control functions for a
series parallel resonant converter and also contains 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-SSOP
©2004 Fairchild Semiconductor Corporation
Rev. 1.0.1


Fairchild Semiconductor Electronic Components Datasheet

FAN7315 Datasheet

LCD Backlight Inverter Drive IC

No Preview Available !

FAN7315
Internal Block Diagram
RT OSCILLATOR
CT
S_S
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5.2uA
-
+
+
Output
Control
Logic
Output
Driver
Output
Driver
OUTA
OUTB
PGND
OUTC
OUTD
EA_OUT
ADIM
EA_IN
OLR
BCT
BDIM
AGND
Error Amp.
+
-
Solr
240uA
Sburst
240uA
2V
-
+
Solr
Voltage
Reference
&
Internal
Bias
Sburst
UVLO
Thermal
protection
Q SET R
QS
CLR
UVLO
2.5VREF
- OLP
+ 300mV
+
- 2V
SCP
REF
ENA
1.4V
VIN
VIN
UVLO 7.4V
2


Part Number FAN7315
Description LCD Backlight Inverter Drive IC
Maker Fairchild Semiconductor
Total Page 8 Pages
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