MT7950 is a primary-side controller for AC-DC LED lighting. It operates in constant current control mode and works in discontinuous conduction mode, suitable for flyback converter under universal input.
MT7950 adopts primary side sensing and regulation technology, no secondary side feedback circuit is needed. Further, the loop compensation components are also eliminated while maintaining system stability. Low component counts and low BOM cost are achieved.
By using Maxic proprietary current regulation method, the MT7950 achieves ±3% accuracy of LED current along with excellent line regulation and load regulation.
MT7950 provides plenty of protections, such as LED short circuit protection, LED open circuit protection, over-temperature protection, VDD over voltage protection, VDD under voltage lock-out, etc.
110V to 220V AC line voltage range
Primary side sensing and regulation, no need of secondary side feedback
High precision constant LED current (+/-3%)
Cycle-by-cycle peak current control
LED short-circuit/open circuit protection
VDD under voltage lock-out protection
VDD over voltage protection
Over temperature protection
Built-in leading edge blanking (LEB)
Extremely minimum external components
Available in SOT235 package
E14/E27/PAR30/PAR38/GU10 LED lamp
LED lighting application
General purpose constant current source