TPS65400有四路输出，器件资料上说一、二路可输出4A，三、四路可输出2A。我实际应用时，供电9V，一路输出3.3V，二路输出5V，三路输出2.5V，四路输出1.2V。3.3V和5V均不能输出大电流（实验用500mA已不能正常输出），2.5V和1.2V不能输出1A以上大电流。将三、四路也改为5V输出，也不能输出大电流（实验用500mA已不能正常输出）。
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