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SF5879 Datasheet PDF

SiFirst SF5879

SF5879 is a high performance, 2nd Generation QuasiResonant (QR-IITM) PWM power switch for offline flyback power c
Part No. SF5879
Datasheet SF5879 Download
Manufacturer SiFirst
Description PWM Power Switch
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SF5879 datasheet page 1 preview

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 page 2 preview