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升压芯片TPS61030

工程师: 

          你好,本人想通过锂电池3.6~4.2v输出4.2至4.5v电压控制GPRS工作,要求输出峰值电流2A;有二个问题不是太理解:

        1、这个芯片可以实现我这个功能吗?

        2、如果输入电压大于4.2v,输出电压还是保持4.2v还是随着输入电压的升高而升高呢?

         谢谢!