LMZ21701SILT – TEXAS INSTRUMENTS

The Texas Instruments LMZ21701SILT is a 1A synchronous step-down converter in a compact 6-pin SOT-23 package. It features a wide input voltage range of 2.7V to 5.5V, enabling operation from a variety of power sources including single-cell Li-Ion batteries. The device boasts a high efficiency exceeding 90% across its operating range, minimizing power loss and extending battery life in portable applications. Output voltage is adjustable from 0.8V to V_IN-0.3V via an external resistor divider, providing design flexibility._x000D_
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Internal features include soft-start, enabling smooth power-up and minimizing inrush current, and cycle-by-cycle current limiting for robust short-circuit protection. The device operates with a switching frequency of 1.2MHz, allowing for the use of smaller external components. Typical applications include powering low-power microcontrollers, sensors, and other integrated circuits in space-constrained designs where high efficiency and stable voltage regulation are crucial. Its small size and high efficiency make it ideal for portable and battery-powered devices demanding minimal board space and maximum runtime. The LMZ21701SILT’s ease of use, owing to its simple external component count, simplifies design and reduces development time.