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咨询一下LMR62014 升压IC发热问题.

Other Parts Discussed in Thread: LMR62014

TI的工程师好,我在用LMR62014做一个升压电路,输入5V,输出8V,500mA,电压输出正常,可是芯片发热严重,手指放上去感觉很烫,应该有70度左右,想请问这个温度正常吗?