Datasheet4U Logo Datasheet4U.com

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.

📥 Download Datasheet

Datasheet Details

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

📁 Similar Datasheet

Part Number Description Manufacturer
SF1531 100.00MHz SAW Filter ETC
SF153 1.5A SOFT FAST RECOVERY RECTIFIER Won-Top Electronics
SF153-T3 1.5A SOFT FAST RECOVERY RECTIFIER Won-Top Electronics
SF153-TB 1.5A SOFT FAST RECOVERY RECTIFIER Won-Top Electronics
SF1533 PWM Power Switch SiFirst Technology

Other Datasheets by SiFirst

Part Number Description
SF1531S Current Mode PWM Controller
SF1530 High Performance Current Mode PWM Controller
SF1538 High Performance PWM Power Switch
SF1539 PWM Power Switch
SF1539HT PWM Power Switch

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
SF1531 η-BalanceTM Current Mode PWM Controller 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 ◆ 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 Box Power Suppl