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SDH761XST
HIGH VOLTAGE START-UP ISOLATED LED CONSTANT CURRENT DRIVER IC WITHOUT VCC CAPACITOR

The SDH761XST is a high accuracy low cost primary side feedback LED constant current driver IC, it is applicable to flyback isolated LED illumination.

The SDH761XST works in inductor current discontinuous mode, it is suitable for 90Vac~265Vac input voltage.

The SDH761XST integrates high-voltage power MOSFET, has a built-in high-voltage start-up circuit, it can supply power independently without any startup resistor or auxiliary winding; the SDH761XST does not need any external VCC capacitor, which greatly saves system cost.

The SDH761XST provides various protections, such as over voltage protection, over temperature fold-back current limit etc. which greatly improves the system safety and reliability.

The SDH761XST is available in the SOP-7-225-1.27 package.


Main feature
  • ±3% LED output current accuracy

  • Built-in high voltage power MOSFET

  • Built-in high-voltage start-up module

  • No need for VCC capacitor

  • No need for loop compensation

  • LED open-circuit protection

  • High temperature current drop (Frequency reduction)

  • No auxiliary winding


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH7611AST SOP-7-225-1.27 / Halogen free Tube
SDH7611ASTTR SOP-7-225-1.27 / Halogen free Tape & Reel
SDH7611ST SOP-7-225-1.27 / Halogen free Tube
SDH7611STTR SOP-7-225-1.27 / Halogen free Tape & Reel
SDH7612AST SOP-7-225-1.27 / Halogen free Tube
SDH7612ASTTR SOP-7-225-1.27 / Halogen free Tape & Reel
Block Diagram

SDH761XST 英文.png

Documents
title Types of Size (KB) date Download the latest English version
SDH761XST PDF 137 2022-04-27 SDH761XST Datasheet