这是我这几年做开发所总结出来的、几款比较好的电源芯片，有3V转5V的、也有5V到各种电压的，希望能给做开发的兄弟们一点帮助-This is what I do in recent years are summed up by the development, several good power chips, a switch to 5V, 3V, but also to a variety of voltage 5V, and hope that I can do little to help