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The INV3121 series integrates the LED pin voltage limit function, LED peak current limit function and over temperature protection function to improve the reliability and stability of the IC during normal operation. At the same time, the flexible peripheral circuit design also ensures that the IC can achieve maximum ripple rejection in different DC and AC ripple applications.
LED input drivers with a wide input range and a single-stage PFC function often have the drawback of excessive output current ripple, and excessive current ripple can cause significant LED power frequency strobe problems. INV3121 effectively suppresses this ripple current to compensate for this defect. Compared with the traditional dual-stage driver back-end adopting DCDC step-up or step-down design, the INV3121 adopts a simpler design and higher cost performance. For low-power LED indoor lighting (such as T8 tubes, panel lights, downlights, bulbs, etc.), especially for occasions where the stability of the light source is high, the INV3121 is a suitable choice.
This series of products is already in the mass production stage and accepts order bookings. 
Infineon Introduces 350mA LED Lighting Current Ripple Suppression Chip
On January 27, 2014, Infineon Electronics (Hangzhou) Co., Ltd. announced its involvement in the LED lighting chip market and launched the LED lighting 100/120HzAC ripple suppression chip INV3121. The INV3121 can withstand a maximum of 350mA/60V operating stress when operating in series with LED beading. When multiple chips are connected in parallel, the INV3121 can be used in higher current applications. The INV3121 is currently available in an eSOP8 package (with heatsink on the bottom).