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TPS63000带动负载问题

Other Parts Discussed in Thread: TPS63000

Hi TI team:

      使用TPS63000升降压芯片,输入是单节锂电池,典型供电电压是3.8V,输出3V。原理图如下,出现问题描述如下:使用此可芯片给MCU和液晶屏及背光供电,此时负载电流有20mA左右,但是当负载没有液晶屏和背光时,大概电流只有5mA左右,此时会出现MCU断电的现象,想了解该颗芯片是否有负载较小自动断电?