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SF5879 Datasheet

Part Number SF5879
Manufacturers SiFirst
Logo SiFirst
Description PWM Power Switch
Datasheet SF5879 DatasheetSF5879 Datasheet (PDF)

SF5879 HV-mWTM、2nd Generation Quasi-Resonant (QR-IITM ) PWM Power Switch FEATURES ◆ Meet EPS Level 6 ◆ Built-in 600V Power MOSFET ◆ Proprietary QR-IITM Technology: ●Digital Anti-jitter for Audio Noise Free Operation ● Digital Frequency Foldback ● Digital Frequency Jittering ◆ Proprietary HV-mWTM to Achieve Less than 80mW Standby Power ◆ Multi-Mode Operation for High Efficiency ◆ 12.7us Maximum On Time ◆ 80KHz Maximum Frequency Limit ◆ 53KHz Frequency Low Clamping in QR Mode ◆ Maximum 65% Duty .

  SF5879   SF5879






Part Number SF5877
Manufacturers SiFirst
Logo SiFirst
Description Generation Quasi-Resonant PWM Controller
Datasheet SF5879 DatasheetSF5877 Datasheet (PDF)

SF5877 HV-mWTM、2nd Generation Quasi-Resonant (QR-IITM ) PWM Controller FEATURES ◆ Easily Meet EPS Level 6 ◆ Proprietary QR-IITM Technology: ●Digital Anti-jitter for Audio Noise Free Operation ● Digital Frequency Foldback ● Digital Frequency Jittering ◆ Proprietary HV-mWTM to Achieve Less than 50mW Standby Power ◆ Multi-Mode Operation for High Efficiency ◆ 12.7us Maximum On Time ◆ 80KHz Maximum Frequency Limit ◆ 53KHz Frequency Low Clamping in QR Mode ◆ Maximum 65% Duty Cycle ◆ Adaptive Slope C.

  SF5879   SF5879







PWM Power Switch

SF5879 HV-mWTM、2nd Generation Quasi-Resonant (QR-IITM ) PWM Power Switch FEATURES ◆ Meet EPS Level 6 ◆ Built-in 600V Power MOSFET ◆ Proprietary QR-IITM Technology: ●Digital Anti-jitter for Audio Noise Free Operation ● Digital Frequency Foldback ● Digital Frequency Jittering ◆ Proprietary HV-mWTM to Achieve Less than 80mW Standby Power ◆ Multi-Mode Operation for High Efficiency ◆ 12.7us Maximum On Time ◆ 80KHz Maximum Frequency Limit ◆ 53KHz Frequency Low Clamping in QR Mode ◆ Maximum 65% Duty Cycle ◆ Adaptive Slope Compensation for CCM Mode ◆ Built-in Soft Start Function ◆ Built-in Synchronous Slope Compensation ◆ Cycle-by-Cycle Current Limiting ◆ Leading Edge Blanking (LEB) ◆ Constant Power Limiting ◆ VDD UVLO, OVP & Clamp APPLICATIONS Offline AC/DC Flyback Converter for ◆ AC/DC Adaptors ◆ SMPS Power Supply GENERAL DESCRIPTION SF5879 is a high performance, 2nd Generation QuasiResonant (QR-IITM) PWM power switch for offline flyback power c.


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