开关稳压器 For MAXM17904: 4.5V to 24V Input, 3.3V, 300mA Output, Integrated Inductor, Compact Step-Down Power Module. For MAXM17905: 4.5V to 24V Input, 5.0V, 300mA Output, Integrated Inductor, Compact Step-Down Power Module. For MAXM17906: 4.5V to 24V Input, 30