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SF1531 - Current Mode PWM Controller

General Description

SF1531 is a high performance, high efficiency, low cost, highly integrated current mode PWM controller for

Key Features

  • Proprietary η-BalanceTM Control to Boost Light Load Efficiency.
  • Proprietary “Zero OCP/OPP Recovery Gap” Control.
  • Built-in Soft Start Function.
  • 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.
  • Pins Floating Protection.

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Datasheet Details

Part number SF1531
Manufacturer SiFirst
File Size 58.20 KB
Description Current Mode PWM Controller
Datasheet download datasheet SF1531 Datasheet

Full PDF Text Transcription for SF1531 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for SF1531. For precise diagrams, and layout, please refer to the original PDF.

SF1531 η-BalanceTM Current Mode PWM Controller FEATURES ◆ Proprietary η-BalanceTM Control to Boost Light Load Efficiency ◆ Proprietary “Zero OCP/OPP Recovery Gap” Control...

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ight Load Efficiency ◆ Proprietary “Zero OCP/OPP Recovery Gap” Control ◆ Built-in Soft Start Function ◆ 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 ◆ Pins Floating Protection ◆ 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 Conver