LM3481QMM – TEXAS INSTRUMENTS

The Texas Instruments LM3481QMM is a synchronous step-down converter in a compact 6-pin WSON package, optimized for high-efficiency operation in low-voltage applications. It features a wide input voltage range of 2.7V to 5.5V, enabling its use in battery-powered systems and portable devices. The device boasts a switching frequency of 1.2MHz, allowing for smaller inductor and capacitor sizes compared to lower frequency solutions. The LM3481QMM incorporates internal compensation, simplifying design and reducing external component count. It offers adjustable output voltage via a single resistor, providing design flexibility. Typical efficiency exceeds 90% at light loads and remains high under heavier current demands, up to its maximum output current of 1.5A. Its key advantages include its small size, high efficiency, ease of use, and ability to operate from a wide input voltage range. Common applications include powering microprocessors, memory, and other low-voltage integrated circuits in space-constrained designs where high efficiency and minimal external components are paramount. The integrated soft-start feature minimizes inrush current, protecting the system during power-up.