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tps61023无法驱动5v 800mA的负载

Other Parts Discussed in Thread: TPS61023

我用tps61023将3.7V 10000mAh的锂电池升压到5V。空载时测得输出电压为5V。接上负载后输出电压为2.5V,并且电路中得电感L6啸叫。将锂电池供电换为5V的USB供电时,输出能正常带动负载。请问这是什么原因?具体电路如下图所示。 电路中的电感L6是1uH 1A的电感,请问是否是电感的额定工作电流太小了导致的?