求救啊!!!
我要做电压转换 1,将7.2v转换为5v
2.将5v转换为3.3v
3,.将3.3v转换为-3.3v
我们用那个LM2940,但是电源的纹波太大,都98mv了,但是我们要求的大概在10mv左右额,有没有什么好的芯片推荐啊,谢谢
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不知道你需要多大的输出功率,所以不好给出型号,你可以参考http://www.ti.com.cn/lsds/ti_zh/power-management/linear-regulators-ldo-products.page找到合适的型号。