用途： 用于一般静音开关，液晶显示器的背景照明，线性开关电源。

Purpose: General purpose switching and muting, LCD back-lighting, supply line switching circuits.

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开关电源产生的噪声比常规线性电源产生的噪声大得多。

The noise in the switching power supply is much larger than the noise in the conventional linear power supply.

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目前，开关电源的用处较之线性电源越来越普遍，这主要是由于体积和效率在电源设计的重要性日益进步。

Currently, the use of switching power supply than the linear power more widely, mainly because of the volume and efficiency in the growing importance of power supply design.

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