KA7543D Datasheet

IC型號(hào)：
KA7543D
PDF描述：
Advanced Feedback Dimming Ballast Control IC
文件大?。?/label>
133.24KB
PDF頁(yè)數(shù)：
16頁(yè)
芯片廠家：
FAIRCHILD

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KA7543

Advanced Feedback Dimming Ballast Control IC

Features

鈥?/div>

Lamp Current Feedback

Soft Start on Feedback

Voltage Dimming (0V~2V) on Feedback

Switch off Control (Vdm=5V)

Soft Dimming Control

No Lamp Protection

One Lamp Detection for Feedback

Abnormal Protection

Low Start-up and Operating Supply Current

UVLO with 1.8V Hysteresis

Totem Pole Output

Trimmed 1.5% Internal Bandgap Reference

14-DIP & 14-SOP

Descriptions

The KA7543 is an advanced lamp current feedback dimming

control IC. This ballast control IC provides all of the

necessary features to implement wide range dimming

control, soft start and constant power consumption for

intelligent electronic ballast systems. The KA7543 is

optimized for advanced electronic ballast systems requiring

minimum board area. External component counts can be

reduced by adopting the KA7543. Current feedback control

method of the inverter status is one of the most attractive

merits in KA7543. Internal soft start circuitry eliminates the

need for external soft start discrete components. Voltage

controlled soft dimming circuit is built into the IC to control

the lighting output in a wide range. Protection circuitry, no

lamp protection, abnormal protection, one lamp detection,

UVLO, restart on lamp adding , have been added.

14-DIP

Applications

鈥?Electronic Ballast

鈥?Lighting Control System

鈥?Half Bridge Drive Control System

14-SOP

Rev. 1.0.3

漏2002 Fairchild Semiconductor Corporation

制造商
Fairchild Semiconductor
產(chǎn)品
Half-Bridge Drivers

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