SY5800 - Silergy

SY5800 Single Stage Flyback And PFC Controller

The SY5800 is a single stage Flyback and PFC controller that targets at LED lighting applications. It receives the rectified AC input voltage up to 400V, and drives the Flyback converter in a quasi-resonant mode for high efficiency unified power factor applications. Ordering Information SY5800 □(□□)□ Temperature Code Package Code Optional Spec Code Temper.

Features

• Primary side control eliminate the opto-coupler.
• Internal high current MOSFET driver: 1A sourcing and 2A sinking
• Low quiescent current at start up mode: 10uA typical
• 16V rising UVLO with 9V hysteresis
• Valley turn-on of the primary MOSFET to achieve low switching loss
• 0.5V max sense voltage on the primary side to minimize the conduction loss.
• Reliable short LED and Open LED protection
• Good power factor(>0.90) with single-stage conversion.
• Compact package: MSOP10 and SO8 Applications
• LED Lighting
• Down light
• Lamp light F1 L1 CX1 AC input R T1 V ac DB1 CX2 L2 N aux D1 .