MT7963

Maximizing IC Performance MT7963 High Accuracy, Dual Winding PSR AC-DC LED Driver DESCRIPTION MT7963 is a PWM controller for AC-DC LED lighting. With 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. Integrated with 650V power switch simplifies the system design and improves the reliablity. With Maxic’s proprietary current regulation technique, the MT7963 achieves ±5% accuracy of LED current along with excellent line regulation and load regulation. MT7963 provides plenty of protections, such as such as over current protection(OCP), short circuit protection (SCP)，over voltage protection (OVP) and over temperature protection(OTP),etc, to ensure system reliability. FEATURES  Build in 650V power MOSFET  No auxiliary winding needed  Supporting 85V to 265V AC line voltage range  Primary side sensing and regulation, no need of secondary side feedback  High precision constant LED current (+/-5%)  Cycle-by-cycle peak current control  LED short-circuit protection  VDD under voltage lock-out protection  Over temperature protection  Available in SOP8 package APPLICATION  LED bulb, Spotlight  LED lighting application  General purpose constant current source Typical Application Circuit NP:NS LED+ Vin_ac CBUS CVCC RCS MT7963 3 VCC 1 CS 4 SW 2 GND 8 NC NC 7 DRAIN 6 5 DRAIN LED- MT7963 Rev. 1.15 www.maxictech.com Copyright © 2...