SY5800

SY5800 Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary datasheet General Description 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 Temperature Range: -40°C to 85°C Ordering Number SY5800FBC SY5800FAC Package type MSOP10 SO8 Note ------- Typical Applications 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 C1 R 3 V cc C2 R1 T1 Np Ns D2 Z1 C4 R4 M S O P 10 1 COMP 10 SGND NC TM R7 ZCS EN GND VIN R6 Q1 C3 R2 5 ISEN DRV 6 R5 Rs C Y1 Figure 1. Schematic Diagram MSOP10 SY5800 Rev. 0.2 Silergy Corp. Confidential-Prepared for Customer Use Only 1 SY5800 Figur...