FAN7340 データシートの表示（PDF） - Fairchild Semiconductor

部品番号

コンポーネント説明

メーカー

FAN7340

LED Backlight Driving Boost Switch

Fairchild Semiconductor 

April 2012

FAN7340

LED Backlight Driving Boost Switch

Features

 Single-Channel Boost LED Switch

 Internal Power MOSFET for PWM Dimming:

RDS(on) = 3.4Ω at VGS=10V, BVDSS=400V

 Current Mode PWM Control

 Internal Programmable Slope Compensation

 Wide Supply Voltage Range: 10V to 35V

 LED Current Regulation: ±1%

 Programmable Switching Frequency

 Analog and PWM Dimming

 Wide Dimming Ratio: On Time=10µs 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 (DMOS) 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

FAN7340M

FAN7340MX

Operating

Temperature

Range

-40°C to +125°C

Package

16-Lead, Small-Outline Integrated Circuit (SOIC)

Packaging

Method

Rail

Tape & Reel

© 2012 Fairchild Semiconductor Corporation

FAN7340 • 1.0.0

www.fairchildsemi.com

Share Link: