LM3480IM3X-3.3/NOPB – TEXAS INSTRUMENTS

The LM3480IM3X-3.3/NOPB is a Texas Instruments synchronous step-down converter integrated circuit optimized for high-efficiency power conversion in space-constrained applications. This specific part number designates a 3.3V output voltage version, packaged in a compact 16-pin, 3x3mm QFN (quad flat no-lead) package with exposed thermal pad (indicated by “IM3X”). The “/NOPB” suffix confirms lead-free packaging. It operates from a wide input voltage range of 4.5V to 18V, making it adaptable to various battery and power supply configurations. _x000D_
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The LM3480 utilizes internal synchronous rectification, minimizing conduction losses and achieving efficiencies exceeding 90% at typical loads. Its adjustable output voltage feature (though this specific part is fixed at 3.3V) and internal soft-start function minimize inrush current. Key features include a 150kHz switching frequency (allowing for smaller external components), an enable pin for power control, and overcurrent and thermal protection mechanisms. Common applications include powering microcontrollers, sensor nodes, and other low-power digital circuits where high efficiency and small footprint are crucial design considerations. Its precise output voltage regulation and robust protection features make it a reliable choice for demanding embedded systems.