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求解,负反馈运放一直输出电源电压,什么原因,如何解决



如图

 运放输出端连接到驱动IC的FB,控制输出电压,但电路上电后,运放始终输出3.3V 导致输出电压完全不对
把运放取消掉,输出电压正常,找不出运放电路哪里不对,求解!