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SDH8303 is a current mode PWM controller with built-in high-voltage MOSFET used for SMPS.

SDH8303 has a built-in high-voltage startup function. 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; frequency jitter improves EMI performance; the soft startup function reduces the device stress to avoid transformer saturation. 

SDH8303 integrates complete protections, including VDD undervoltage protection, VDD overvoltage protection, lead edge blanking, output short-circuit protection, over current protection, over temperature protection, etc. 

Main feature
  • High-voltage startup

  • Burst mode at light load

  • Frequency jitter

  • Soft startup

  • VDD undervoltage protection

  • VDD overvoltage protection

  • Lead edge blanking

  • Output short-circuit protection  

  • Over current protection 

  • Over temperature protection

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH8303 DIP-8-300-2.54 SDH8303 Halogen free Tube
Block Diagram


title Types of Size (KB) date Download the latest English version
SDH8303 Datasheet PDF 311 2020-06-22 SDH8303 Datasheet