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TPS75005给2812供电,运行一段时间会突然掉电,输入5V正常。



VIN输入5V,D2在实际使用中已经短接,VCC是tps输出3.3V,运行一段时间后,LD1的灯会突然熄灭,然后过一段时间变成比较暗的状态。