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Fairchild Semiconductor - LED Backlight Driving Boost Switch

Numéro de référence FAN7340MX
Description LED Backlight Driving Boost Switch
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FAN7340MX fiche technique
July 2013
FAN7340
LED Backlight Driving Boost Switch
Features
Single-Channel Boost LED Switch
Internal Power MOSFET for PWM Dimming:
RDS(on) = 3.4 Ω at VGS=10 V, BVDSS=400 V
Current Mode PWM Control
Internal Programmable Slope Compensation
Wide Supply Voltage Range: 10 V to 35 V
LED Current Regulation: ±1%
Programmable Switching Frequency
Analog and PWM Dimming
Wide Dimming Ratio: On Time=10 µs to DC
Cycle-by-Cycle Current Limiting
Thermal Shutdown: 150°C
Open-LED Protection (OLP)
Over-Voltage Protection (OVP)
Over-Current Protection (OCP)
Error Flag Generation (for External Load Switch)
Internal Soft-Start
16-Lead SOIC Package
Description
The FAN7340 is a single-channel boost controller that
integrates an N-channel power MOSFET for PWM
dimming using Fairchild’s proprietary planar Double-
diffused MOS (D MOS) technology.
The IC operates as a constant-current source for driving
high-current LEDs.
It uses Current Mode control with programmable slope
compensation to prevent subharmonic oscillation. The IC
provides protections including: open-LED protection,
over-voltage protection, and direct-short protection for
high system reliability.
The IC internally generates a FAULT signal with delay if
an abnormal LED string condition occurs. PWM dimming
and analog dimming functions can be implemented
independently. Internal soft-start prevents inrush current
flowing into output capacitor at startup.
Applications
LED Backlight for LCD TV
LED Backlight for LCD Monitor
LED Lighting
Ordering Information
Part Number
FAN7340MX
Operating
Temperature
Range
-40°C to +125°C
Package
16-Lead, Small-Outline Integrated Circuit (SOIC)
Packaging
Method
Tape & Reel
© 2013 Fairchild Semiconductor Corporation
FAN7340 1.0.1
www.f airchildsemi.com

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