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寻找一款DC/DC芯片

第一种方案:输入12V,输出0V~9V,输出电流2A。

第二种方案:输入24V,输出0V~12V,输出电流2A。

需要说明的是,DC/DC芯片需要有一个控制端口连接到单片机或者ARM上,用软件控制输出电压的多少。

请问,有这样的DC/DC芯片吗?