LM2574-12YN 开关稳压器 Conv DC-DC 4V to 40V Step Down Single-Out 12V 0.5A 8-Pin PDIP Tube
MIC261201YJL-TR 开关调节器 Conv DC-DC 4.5V to 28V Synchronous Step Down Single-Out 0.8V to 5.5V 12A 28-Pin QFN EP T/R
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