SiFirst SFL668
SFL668 is a high precision AC/DC offline PSR (Primary Side Regulation) controller for LED luminaries.FEATURES
● Primary Side Regulation (PSR) Control, No Secondary Feedback Circuit Required● 1% Precision (@Tj=25 ℃) Internal Reference Voltage for Constant Current (CC) Control
● Wide VDD Range (10 to 30V) Eases Flexible LED System Design
● Precision LED Output Voltage Clamp
● Compensate for Line Voltage Variation and Transformer Inductance Tolerance
● Built-in Soft Start
● All Pins Floating Protection
● LED Open/Short Circuit Protection
● PFM Control Eases EMI Design
● Cycle-by-Cycle Current Limiting
● Built-in Leading Edge Blanking (LEB)
● VDD Under Voltage Lockout (UVLO)
● Output Over Voltage Protection
● VDD OVP & Clamp
APPLICATIONS
● LED Luminaries● LED Tube Light
● LED PAR30/PAR38, Down Light
● GU10/E27 LED Bulb, Spot Light
GENERAL DESCRIPTION
The IC can provide very