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SF1539HT - PWM Power Switch

General Description

SF1539HT is a high performance, high efficiency, high

Key Features

  • Built-in 600V Power MOSFET.
  • Over Temperature Protection (OTP).
  • Proprietary η-BalanceTM Control to Boost Light Load Efficiency.
  • Proprietary “Zero OCP/OPP Recovery Gap” Control.
  • Fixed 65KHz Switching Frequency.
  • Built-in Soft Start Function.
  • Very Low Startup Current.
  • Frequency Reduction and Burst Mode Control for Energy Saving.
  • Current Mode Control.
  • Built-in Frequency Shuffling.
  • Built-in Synchronous Slope Compensation.
  • Cycle-by-Cycle Curr.

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Datasheet Details

Part number SF1539HT
Manufacturer SiFirst
File Size 249.56 KB
Description PWM Power Switch
Datasheet download datasheet SF1539HT Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
SF1539HT η-BalanceTM PWM Power Switch Fixed 65KHz Fsw and OTP Protection FEATURES ◆ Built-in 600V Power MOSFET ◆ Over Temperature Protection (OTP) ◆ Proprietary η-BalanceTM Control to Boost Light Load Efficiency ◆ Proprietary “Zero OCP/OPP Recovery Gap” Control ◆ Fixed 65KHz Switching Frequency ◆ Built-in Soft Start Function ◆ Very Low Startup Current ◆ Frequency Reduction and Burst Mode Control for Energy Saving ◆ Current Mode Control ◆ Built-in Frequency Shuffling ◆ Built-in Synchronous Slope Compensation ◆ Cycle-by-Cycle Current Limiting ◆ Built-in Leading Edge Blanking (LEB) ◆ Constant Power Limiting ◆ Pins Floating Protection ◆ Audio Noise Free Operation ◆ VDD OVP & Clamp ◆ VDD Under Voltage Lockout (UVLO) APPLICATIONS Offline AC/DC Flyback Converter for ◆ AC/DC Adaptors ◆ Open-fram