FAN7547AMXc Fairchild Semiconductor, FAN7547AMXc Datasheet

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FAN7547AMXc

Manufacturer Part Number
FAN7547AMXc
Description
LCD Backlight Inverter Drive IC
Manufacturer
Fairchild Semiconductor
Datasheet
FAN7547A Rev. 1.0.3
© 2005 Fairchild Semiconductor Corporation
FAN7547A
LCD Backlight Inverter Drive IC
Features
Ordering Information
Backlight Lamp Ballast and Soft Dimming
Reduced Number of Components
Wide Range of Operating Voltage (6 to 30V)
Precision Voltage Reference Reduced to 3.4%
Low Standby Current (Typically 50µA)
Soft-Start Function
PWM Control
Analog, Mixed, and PWM Dimming Function
P-Channel MOSFET Drive
Open-Lamp Protections (OLP)
Shutdown Protections (SDP)
14-Pin SOP
Part Number
FAN7547AMX
FAN7547AM
Package
14-SOP
Pb-Free
Yes
Operating Temperature Range Packing Method
Description
The FAN7547A provides all control functions for a
current-fed, push-pull, self-oscillation type converter and
also contains a pulse-width-modulated (PWM) controller
to develop a supply voltage. Typical operating frequency
range is from 30kHz to 100kHz, depending on the cold
cathode fluorescent lamp (CCFL) and the transformer's
characteristics.
-25°C ~ +85°C
14-SOP
Tape & Reel
February 2007
www.fairchildsemi.com
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FAN7547AMXc Summary of contents

Page 1

... SOP Ordering Information Part Number Package FAN7547AM 14-SOP FAN7547AMX © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 Description The FAN7547A provides all control functions for a current-fed, push-pull, self-oscillation type converter and also contains a pulse-width-modulated (PWM) controller to develop a supply voltage. Typical operating frequency ...

Page 2

... Internal Block Diagram OUT V ref UVLO 5V S/S 1.3V 0.1V RCT Oscillator V DS Full Lighting when © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 V ref 3V Output Driver Internal Bias V CC 40μA Comparator2 Comparator3 120μ Dimming Control and Mode Selection Block PWM Analog Figure 1 ...

Page 3

... V ref RCT 6 OLP 7 SDP COMP 10 S/S 11 OSC OUT © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 OUT OSC S FAN7545A GND RCT DS ref ms Figure 2. Pin Configuration (Top View) ...

Page 4

... V Supply Voltage CC T Operating Junction Temperature J T Operating Temperature Range A T Storage Temperature Range STG P Power Dissipation D © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 ≤ 85°C and V A Parameter 4 =10V unless otherwise specified. CC Value Unit °C 150 °C - ° ...

Page 5

... OUTPUT SECTION V Output High Voltage OH V Output Low Voltage OL t Rising Time r t Falling Time f Output Voltage with UVLO V UV Activated © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 Conditions < V < 30V 25° 0mA, 7V < V < 30V J ref ...

Page 6

... Temparature['C] Temperature [°C] Figure 5. Output vs. Temperature Soft Start Charge Current vs Temparature - Temparature['C] Temperature [°C] Figure 7. Soft-Start Charge Current vs. Temperature © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 5.75 5.50 5.25 5. -20 Figure 4. Start Voltage vs. Temperature 3.15 3.10 3.05 3.00 2. 100 -15 Figure 6. Reference Voltage vs. Temperature ...

Page 7

... Temparature['C] Temperature [°C] Figure 11. Output High Voltage vs. Temperature Output Voltage with UVLO Activated vs Temparature 4.0 3.5 3.0 2.5 2.0 - Temparature['C] Temperature [°C] Figure 13. Output Voltage with UVLO Activated vs. Temperature © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 (Continued) 3.4 3.2 3.0 2.8 2.6 - 100 Figure 10. Protection Voltage vs. Temperature 0.8 0.4 0.0 -0 ...

Page 8

... Package Dimensions 14-SOP Dimensions are in millimeters unless otherwise noted. © 2005 Fairchild Semiconductor Corporation FAN7547A Rev. 1.0.3 Figure 14. 14-Lead Small Outline Package (SOP) 8 www.fairchildsemi.com ...

Page 9

... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ® ACEx Across the board. Around the world.™ ActiveArray™ Bottomless™ Build it Now™ CoolFET™ ...

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