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    SDH8321H is a current mode PWM controller with built-in 820V MOSFET used for SMPS.

    SDH8321H integrates high-voltage startup circuit. It enters burst mode at light load to reduce the system standby power dissipation; the frequency reduction function optimizes the conversion efficiency at light load; the soft startup function can reduce the stress of device and avoid transformer saturation.

    SDH8321H features various protections, including VDD undervoltage protection, VDD overvoltage protection, lead edge blanking, over current protecting, over temperature protection, etc. Meanwhile, if any protection occurs, the circuit will continue to restart automatically until the system recovers.


Main feature
  • Integrated 820V MOSFET

  • Fixed 15V output

  • Internal high-voltage startup circuit

  • Burst mode at light load

  • Frequency reduction

  • Soft startup

  • VDD undervoltage protection

  • VDD overvoltage protection

  • Leading edge blanking

  • Over current protection

  • Over load protection

  • Over temperature protection


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH8321H SOP-7DC-225-1.27 SDH8321H Halogen free Tube
SDH8321HTR SOP-7DC-225-1.27 SDH8321H Halogen free Tape&Reel
Block Diagram

SDH8321H 英文(PS ).png

Documents
title Types of Size (KB) date Download the latest English version
SDH8321H 0 1970-01-01 SDH8321H Brief Datasheet