DESCRIPTION
   MT7941 is a high precision primary-side feedback and regulation controller for LED lighting. It regulates precisely LED current in isolated lighting applications. MT7941 works under Discontinuous Conduction Mode (DCM). It simplifies LED lighting system by eliminating the secondary sense, the auxiliary winding and feedback circuit. Integrated with 650V power switch, the adjustable LED open-circuit protection (OVP) function simplifies the system design and improves the reliability.

FEATURES
• Internal 650V power MOSFET
• No auxiliary winding
• Supporting 85V to 265V AC line voltage
   range
• Primary side sensing and regulation, no
   secondary side feedback
• High precision constant LED current (± 3%)
• Adjustable LED open-circuit voltage
   protection threshold
• LED short circuit protection
• Cycle-by-cycle peak current control
• VDD under voltage lock-out protection
• Over temperature regulation (OTR)
• Freewheeling diode Open/short-circuit
   protection
• Available in SOP7 package

APPLICATION
• LED bulb, spotlight
• LED lighting application
• General purpose constant current source