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SDH698XD
NON-ISOLATED LED LIGHTING DRIVE IC WITH BUILT-IN HIGH-VOLTAGE MOSFET, HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY

    SDH698XD is designed for non-isolated LED driving with floating Buck topology, built-in HV power MOSFET and depletion mode MOSFET are available. 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 as its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.

    SDH698XD can realize high power factor without any external integral capacitor.

Furthermore, SDH698XD has a built-in VCC regulator and a high-voltage power supply controller, which is able to supply power to VCC capacitor in a certain VCC range without any peripheral power supply or HV startup circuit, saving the system cost and area.  

    SDH698XD integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

    SDH698XD 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

  • Built-in VCC regulator

  • Built-in HV power MOSFET and depletion mode MOSFET

  • 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

  • VCC under voltage protection

  • Over temperature protection

  • Over current protection

  • Internal current reduction in high temperature condition


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH6983D DIP-8-300-2.54 / Halogen free Tube
SDH6984D DIP-8-300-2.54 / Halogen free Tube
Block Diagram

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Documents
title Types of Size (KB) date Download the latest English version
SDH698XD 0 1970-01-01 SDH698XD Brief Datasheet