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看数据手册,每路最大输出电流是500mA,但是又有图表数据显示占空比和输出电流之间的关系,随着N(路数)的增加,占空比越大,输出电流越小,这到底是什么意思呢?和500mA到底是什么关系?比如说如果我三路并联,驱动12V线圈电压的继电器,使继电器持续闭合,那么到底能驱动多大电流的继电器呢?