KA7543

更新时间： 2024-11-05 22:47:43

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
16页	133K
描述
Advanced Feedback Dimming Ballast Control IC

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KA7543 数据手册

www.fairchildsemi.com

KA7543

Advanced Feedback Dimming Ballast Control IC

Features

Descriptions

• 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

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.

Applications

• Electronic Ballast

14-DIP

• Lighting Control System

• Half Bridge Drive Control System

14-SOP

Rev. 1.0.3

12 3 4 5 6 7...16

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与KA7543相关器件

型号	品牌	获取价格	描述	数据表
KA7543D	FAIRCHILD	获取价格	Advanced Feedback Dimming Ballast Control IC
KA7545	FAIRCHILD	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.5VV, BIPolar, PBCY3, TO-92, 3 PIN
KA7545	SAMSUNG	获取价格	Power Management Circuit, Fixed, +4.5VV, BIPolar,
KA75450	FAIRCHILD	获取价格	Voltage Detector
KA75450M	FAIRCHILD	获取价格	Voltage Detector
KA75450MTF	FAIRCHILD	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PSSO3, LEAD FREE, SOT-89, 3 PIN
KA75450Z	FAIRCHILD	获取价格	Voltage Detector
KA75450ZTA	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3, TO-92, 3 PIN
KA7551	SAMSUNG	获取价格	Switching Controller, Voltage-mode, 0.021A, 500kHz Switching Freq-Max, BIPolar, PDSO16, SO
KA7552	SAMSUNG	获取价格	PWN CONTROLLER