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SF1538 - High Performance PWM Power Switch

General Description

SF1538 is a high performance, low cost, highly integrated current mode PWM

Key Features

  • Built-in 600V Power MOSFET.
  • Proprietary “Zero OCP/OPP Recovery Gap” Control.
  • Programmable Switching Frequency.
  • Built-in Soft Start Function.
  • All Pins Floating Protection.
  • Very Low Startup Current.
  • High Voltage CMOS Process with Excellent ESD Protection.
  • Frequency Reduction and Burst Mode Control for Energy Saving.
  • Current Mode Control.
  • Built-in Frequency Shuffling.
  • Programmable Switching Frequency.
  • Built-in Synchronous Slope Compensati.

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Datasheet Details

Part number SF1538
Manufacturer SiFirst
File Size 500.02 KB
Description High Performance PWM Power Switch
Datasheet download datasheet SF1538 Datasheet

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.

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SF1538 High Performance PWM Power Switch Programmable Fsw FEATURES ◆ Built-in 600V Power MOSFET ◆ Proprietary “Zero OCP/OPP Recovery Gap” Control ◆ Programmable Switching Frequency ◆ Built-in Soft Start Function ◆ All Pins Floating Protection ◆ Very Low Startup Current ◆ High Voltage CMOS Process with Excellent ESD Protection ◆ Frequency Reduction and Burst Mode Control for Energy Saving ◆ Current Mode Control ◆ Built-in Frequency Shuffling ◆ Programmable Switching Frequency ◆ Built-in Synchronous Slope Compensation ◆ Cycle-by-Cycle Current Limiting ◆ Built-in Leading Edge Blanking (LEB) ◆ Constant Power Limiting ◆ Audio Noise Free Operation ◆ VDD OVP & Clamp ◆ VDD Under Voltage Lockout (UVLO) APPLICATIONS Offline AC/DC Flyback Converter for ◆ AC/DC Adaptors ◆ Open-frame SMPS ◆ Set-Top Bo