DESCRIPTION
MT7968A is a high precision primary-side feedback and regulation controller for LED lighting. It regulates precisely LED current in isolated lighting application. MT7968A works under Discontinuous Conduction Mode (DCM). It simplifies LED lighting system by eliminating the secondary sense, the auxiliary winding and feedback circuit. Integrated with 600V power switch and adjustable LED open-circuit protection (OVP) function simplifies the system design and improves the reliablity. With Maxic’s proprietary current regulation and internal compensation technique, the MT7968A achieves ±5% accuracy of LED current along with excellent line regulation and load regulation. It is also non-sensitive to the inductance of the transformer. MT7968A provides various protection features to improve the system reliability, including over current protection (OCP), short circuit protection (SCP)，over voltage protection (OVP) and over temperature protection(OTP),etc.

FEATURES
Internal 600V 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 (±5%)
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 protection
Available in DIP7 package