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    SDH790XSCN
    NON-ISOLATED LED LIGHTING DRIVE IC WITH BUILT-IN HIGH-VOLTAGE MOSFET, HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY

        SDH790XSCN is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, MOSFET 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.

        SDH790XSCN can realize high power factor without any external integral capacitor.

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

        SDH790XSCN integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

        SDH790XSCN 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 single harmonic optimization

    • 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
    SDH7901SCN SOP-7-225-1.27 / Halogen free Tube
    SDH7901SCNTR SOP-7-225-1.27 / Halogen free Tape & Reel
    SDH7902SCN SOP-7-225-1.27 / Halogen free Tube
    SDH7902SCNTR SOP-7-225-1.27 / Halogen free Tape & Reel
    SDH7903SCN SOP-7-225-1.27 / Halogen free Tube
    SDH7903SCNTR SOP-7-225-1.27 / Halogen free Tape & Reel
    SDH7904ASCN SOP-7-225-1.27 / Halogen free Tube
    SDH7904ASCNTR SOP-7-225-1.27 / Halogen free Tape & Reel
    SDH7904SCN SOP-7-225-1.27 / Halogen free Tube
    SDH7904SCNTR SOP-7-225-1.27 / Halogen free Tape & Reel
    Block Diagram

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