BQ29209DRBR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。BQ29209DRBR Price reference $ 0.330000。BQ29209DRBR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information BQ29209DRBR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial