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MT7950
High Accuracy, Primary-side AC-DC LED Driver
DESCRIPTION
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.

FEATURES
 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

APPLICATION
 E14/E27/PAR30/PAR38/GU10 LED lamp
 LED lighting application
 General purpose constant current source
脚注信息
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