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SDH8594ES is offline PSR power controller which operates in PFM to achieve high performance and high efficiency. It integrates a 650V MOSFET and has high-voltage startup function . Both the output current and voltage are sensed by primary side. 

SDH8594ES removes the need for optocoupler & TL431 while achieving excellent line and load regulation. It also eliminates the need for loop compensation while maintaining stability over all operation conditions. 

SDH8594ES supports applications up to 12W.

Main feature
  • High Precision Constant Voltage and Current Regulation at Universal AC Input

  • Ultra Low Start-up Current

  • Programmable CV and CC Regulation

  • Programmable Cable Drop Compensation

  • Integrated 650V MOSFET

  • Integrated High Voltage Startup

  • Low 75mW Standby Power

  • Built-in Line Voltage and Primary Winding Inductance Compensation

  • Built in Leading Edge Blanking(LEB)

  • No External Compensation Required

  • On-chip OTP

  • VCC Over Voltage Protection

  • Output Over Voltage Protection

  • VCC Under Voltage Lockout with Hysteresis(UVLO)

  • Cycle-by-Cycle Current Limiting

  • Output Short Circuit Protection

  • Over Current Protection

  • Maximum on time protection

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH8594ESTR SOP-8-225-1.27 SDH8594ES Halogen free Tape & Reel
SDH8594ES SOP-8-225-1.27 SDH8594ES Halogen free Tube
Block Diagram


title Types of Size (KB) date Download the latest English version
SDH8594ES Datasheet PDF 330 2020-06-22 SDH8594ES Datasheet