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SDH8312 is AC-DC controller with built-in 650V MOSFET used for SMPS.

SDH8312 integrates high-voltage circuit and self-power function for fast startup and low standby power dissipation. It features the frequency reduction function to optimize the conversion efficiency at light load; the soft startup function reduces the device stress to avoid transformer saturation. 

SDH8312 integrates complete protections, including VDD undervoltage protection, open loop protection, output overload protection, output short-circuit protection, over temperature protection, etc. 

SDH8312 supports applications of 3.3V~18V ouput.

Main feature
  • Adjustable output voltage

  • High-voltage self-startup 

  • Adaptive Frequency reduction

  • Soft startup

  • VDD undervoltage protection

  • FB open-loop protection 

  • Lead edge blanking

  • Output overload protection

  • Short-circuit protection 

  • Over temperature protection 

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH8312TR SOP-8-225-1.27 SDH8312 Halogen free Tape & Reel
SDH8312 SOP-8-225-1.27 SDH8312 Halogen free Tube
Block Diagram


title Types of Size (KB) date Download the latest English version
SDH8312 Datasheet PDF 238 2020-06-22 SDH8312 Datasheet