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TLV1117: TLV1117-3.3功耗大问题

Part Number: TLV1117

之前用TLV1117LV3.3,因为输入电压范围变宽,换了TLV1117-3.3,但是功耗很大,一带载就到90mA左右。

输入7.2-8.4V,输出3.3V。

请帮忙看下。

  • Hi

        LDO的功耗计算就是输入电压减去输出电压然后乘以输出电流。 如果LDO输入输出电压压差比较大,就比较容易造成LDO功耗比较大,特别是电流比较大的情况下就不适合用了。

        如上可以根据你的情况计算LDO的功耗。