L6920DCTR by STMicroelectronics Design and production,in GUI XIN Group (Hong Kong) Limited Spot sales,And can pass GUI XIN Group (Hong Kong) Limited Purchasing。L6920DCTR Price reference $ 3.046400。L6920DCTR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L6920DCTR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial