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DD0603SA_3V3 Auto Buck-Boost DC DC 0.9-6V to 3.3V Step-UP Step-Down Converter Board Power Supply Module DD0603SA_3V3 - AliExpress
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3.3V STEP-UP/STEP-DOWN S9V11F3S5CMA POLOLU - Converter: step up / step down | Uout: 3.3÷5V; Uin: 2÷16V; 1.5A; 85%; POLOLU-2871 | TME - Electronic components
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