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DD4012SA 1A DC 5V 6V 9V 12V 24V to 3.3V 5V DC-DC Step-Down Buck Converter Regulator Module Board - AliExpress
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Dc-dc Boost/buck/buck Charger Power Module Converter Dc 5-40v To3v 3.3v 3.7v 5v 6v 7.5v 9v 12v Adjustable Power Charger Module - Integrated Circuits - AliExpress
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