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Mini360 Ultra-Small 1-17V Output DC-DC Step-Down Buck Converter Module – Envistia Mall

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5pcs Mini Dc-dc 12-24v To 5v 3a Step Down Power Supply Module Voltage Buck Converter Adjustable 97.5% 1.8v 2.5v 3.3v 5v 9v 12v - Integrated Circuits - AliExpress