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      • 金年会·(中国)_金年会

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        SDH790XDHT
        NON-ISOLATED LED LIGHTING DRIVE IC WITH BUILT-IN HIGH-VOLTAGE MOSFET, HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY

        SDH790XDHT is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate. Also, high PF in full range is available due to its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.

        SDH790XDHT can realize high power factor without any external integral capacitor.

        Peripheral VCC pin and VCC capacitor (to GND) are unnecessary.

        Over voltage protection threshold value is set through pin ROVP.

        SDH790XDHT integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

        SDH790XDHT has ultra low start-up current and operating current, is able to high effectively drive highlight LED in full voltage input range.


        Main feature

        Proprietary constant control method (Patent)

        High power factor without any external compensation capacitor (Patent)

        Built-in high-voltage power supply

        No peripheral VCC pin and VCC capacitor

        Built-in high voltage power MOSFET and high voltage JFET

        Constant current with high accuracy for LED (<±3%)

        PF>0.9 in full voltage input range

        Boundary-Conduction mode

        LED short circuit protection

        LED open circuit protection

        Over current protection

        Internal current reduction in high temperature condition


        Ordering Information
        Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
        SDH7903DHT DIP-8A-300-2.54 / Halogen free Tube
        SDH7904DHT DIP-8A-300-2.54 / Halogen free Tube
        Block Diagram

        SDH790XDHT 英文（1440&720）.png

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