EC4318|Offiline Buck LED Driver IC With APFC

EC4318|Offiline Buck LED Driver IC With APFC

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General Description

The EC4318 is a high precision non-isolated buck driver with APFC, specially designed for universal input offline
constant current LED lighting, and reach out low THD.
Operating in critical conduction mode, the power MOSFET switching loss is reduced and the inductor is fully utilized.
By integrating a 500V power MOSFET, the fewest external components, and cutting-edge circuit design, output ability can be precisely controlled in the most competitive method of all kinds. EC4318 adopts floating ground structure, inductor current is hence sensed during the whole switching cycle, which generates precise output current, line and load regulation when being applied in system.
EC4318 also features full protection function to enhance reliability on board, including LED Open / Short circuit
protection, OVP/UVP/OTP (Self-reduce)/OCP current sensing open protection and so on.

Features

 High Power Factor, ultra- low THD
 Valley Switch, High Efficiency, LOW EMI
 High- V MOSFET embedded
 Thermal Regulation Compensation
 ±3% Output Current Accuracy
 Universal AC input
 Auto Induction Compensate
 Auto Output Voltage adaption
 Full Protection Features: ( LED O/S CKT; OTP
OCP; OVP/UVP)
 Auto Recovery to default
 Fewest external components required on board

Applications

 LED High Brightness Lighting
 Light Bulb, Light Tube


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