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SDH698XS
NON-ISOLATED LED LIGHTING DRIVE IC WITH BUILT-IN HIGH-VOLTAGE MOSFET, HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY

    The SDH698XS is designed for non-isolated LED driving with floating Buck topology, built-in HV power MOSFET and depletion mode MOSFET are available. With this topology, 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.

    The SDH698XS is able to realize high power factor without any peripheral integral capacitor.

    Furthermore, SDH698XS 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 volume.

    SDH698XS integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

    The start-up current and operating current are low and highlight LED can be driven with high efficiency in full range.


Main feature
  • Proprietary constant control method (Patent)

  • High power factor without any peripheral integral 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 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
SDH6981S SOP-7-225-1.27 / Halogen free Tube
SDH6981STR SOP-7-225-1.27 / Halogen free Tape & Reel
SDH6981SC SOP-7-225-1.27 / Halogen free Tube
SDH6981SCTR SOP-7-225-1.27 / Halogen free Tape & Reel
SDH6982S SOP-7-225-1.27 / Halogen free Tube
SDH6982STR SOP-7-225-1.27 / Halogen free Tape&Reel
SDH6983S SOP-7-225-1.27 / Halogen free Tube
SDH6983STR SOP-7-225-1.27 / Halogen free Tape&Reel
Block Diagram

SDH698XS  英文.png

Documents
title Types of Size (KB) date Download the latest English version
SDH698XS 0 1970-01-01 SDH698XS Brief Datasheet