REG101NA-A/250 – TEXAS INSTRUMENTS

The REG101NA-A/250 is a surface-mount, low-dropout (LDO) voltage regulator specifically designed for high-efficiency power management in portable and battery-powered applications. This device utilizes a proprietary, low-noise topology resulting in minimal output ripple and noise, typically less than 5µVrms. It operates with an input voltage range of 2.5V to 5.5V, providing a fixed 1.0V output voltage with a maximum output current of 250mA. Packaged in a compact 6-pin SOT-23 package, it minimizes board space requirements._x000D_
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Its key advantage lies in its exceptionally high efficiency, even at light loads, achieving over 90% efficiency at a 100mA load. This is attributed to its low quiescent current of only 20µA, significantly reducing power consumption in standby modes. The REG101NA-A/250 incorporates thermal shutdown and short-circuit protection, enhancing its robustness. Typical applications include powering sensitive analog circuitry, powering microcontrollers in battery-operated systems, and providing clean voltage rails in portable medical devices where low noise and high efficiency are paramount. The device’s stable operation with ceramic output capacitors simplifies design and reduces the bill of materials.