EC4188B – High Efficiency LED Buck Controller

EC4188B – High Efficiency LED Buck Controller
General description
The EC4188B is a highly-integrated, low startup current, average current mode, one cycle control PFC and fixed switching frequency PWM controller. These functions enable the LED driver to easily meet the accuracy average LED current and high power factor requirements. The integrated functions also include the LED short protection, open protection, and internal over temperature protection. The COMP pin controls the duty by connected an RC compensation network to ground and forming the closed loop feedback control. To protect the external power MOSFET from being damaged by supply over voltage, the EC4188B OUT pin voltage is clamped to about 15V.The EC4188B improves the performance and reduces the cost of the LED driver. It is a 6-pin SOT23-6L package.

Features
●High Power Factor by One Cycle Control

●Accuracy Constant Current

●Low BOM Cost

●Linear Dimming on DIM Pin

●Average Current / Fixed Frequency Control

●Gate Output Voltage Clamp

●LED Open Protection (OVP)

●LED Short Protection (SCP)

●Over Current Protection (OCP)

●Internal OTP Protection

●300mA Driving Capability for OUT Pin

●Fast Start Current

●Incompatible Electronic Ballast and Inductance Ballast

Applications
●E26/27, T8 LED Tube

●Others LED Lighting Applications

Pin Configurations

Ordering info

Typical Applications circuit


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飛虹高科股份有限公司

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於民國76年成立,79年進入科學園區,為Fabless 的IC設計公司,從事IC之設計研發。 以CMOS IC及模組設計為主,並獲多項關鍵技術專利。

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規格是死的,設計是活的
我們提供具有靈活彈性的客製化IC與模組設計

告訴我們你想做的產品項目吧!