MT7930

MT7930 Maximizing IC Performance Single Stage, High PFC, AC-DC LED Driver DESCRIPTION MT7930 is a single-stage，primary side control AC-DC LED driver with high power factor. With MAXIC patent pending technology, the LED current can be regulated accurately through sensing the primary side information with few external components without the need of an opto-coupler. MT7930 integrates power factor correction function and works in DCM and constant OFF time mode. A small harmonic current emission (THD) is achieved. MT7930 is also implemented with various protections, such as over-current protection (OCP), over-voltage protection protection protection (SCP) (OTP), etc, (OVP), and to FEATURES            Wide input voltage range from AC85V to AC265V Highly accurate constant LED current (+/-3%) Up to 50W power drivability. Primary-side current sensing and regulation without an opto-coupler Leading edge blanking (LEB) technique Cycle-by-cycle current limiting Under-voltage lockout (UVLO) protection VDD and output over voltage protection Adjustable constant current and output power setting Power on soft-start Available in SOP8 package short-circuit over-temperature ensure a reliable system. APPLICATIONS     AC/DC LED driver applications General purpose constant current source Signal and decorative LED lighting E14/E27/PAR30/PAR38/GU10 LED lamp Typical Application Circuit MT7930 Rev. 1.30 www.maxictech.com Copyright © 2011 Maxic Technology Corporation Page 1 MT793...