FAN7548 Datasheet

IC型號(hào)：
FAN7548
PDF描述：
Dual LCD Back Light Inverter Drive IC
文件大?。?/label>
1141.20KB
PDF頁數(shù)：
12頁
芯片廠家：
FAIRCHILD

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Dual LCD Back Light Inverter Drive IC

Features

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Backlight Lamp Ballast and Soft Dimming

Reduce the Number of Components

Wide Range Operating Voltage 9-30V

Precision Voltage Reference Trimmed to 3.4%

Low Standby Current (Typ. 150uA)

Soft Start Function

Dual PWM Control

Analog & Burst Dimming Function

P-Channel MOSFET Drive

Open Lamp Regulation(OLR)

Open Lamp Protection(OLP)

Buck+Royer Topology

20 SSOP

FAN7548

Description

The FAN7548 provides the necessary circuit blocks to

implement a highly efficient CCFL backlight power supply

in a small footpirnt 20 SSOP package. The device features

two control stages for operating independent resonant tanks

for multi-lamp designs.

External parts count is minimized and system cost is reduced

by integration such features as a feedback controlled PWM

driver stage, the soft start, the open lamp regulation, the open

lamp protection, the UVLO, and the self-synchronization

circuitry between the buck and Royer stages. It includes an

internal shunt regulator, allowing it to operate with input

voltage from 9 to 30V. It supports analog and burst dimming

modes of operation. It providees the open lamp regulation,

and the open lamp protection.

20-SSOP

Rev. 1.0.0

漏2003 Fairchild Semiconductor Corporation

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