LM2842XQMKX/NOPB – TEXAS INSTRUMENTS

The Texas Instruments LM2842XQMKX/NOPB is a monolithic, synchronous step-down DC-DC converter housed in a compact 16-pin QFN (4x4mm) package, featuring lead-free, halogen-free construction. It operates from a wide input voltage range of 4.5V to 28V, enabling its use in diverse automotive and industrial applications. The device incorporates internal high-side and low-side MOSFETs, minimizing external component count and simplifying design. Its switching frequency is programmable from 200kHz to 1MHz, allowing optimization for efficiency and noise considerations. The LM2842XQMKX/NOPB features a 1.23V adjustable output voltage, achieved via external feedback, with a typical efficiency exceeding 90% at moderate loads. Protection features include cycle-by-cycle current limiting, thermal shutdown, and under-voltage lockout. Its internal soft-start minimizes inrush current. Common use cases include point-of-load converters in distributed power architectures, battery-powered systems requiring high efficiency, and applications demanding robust protection against transient events. The device’s small footprint and high efficiency make it an ideal choice for space-constrained designs where high power density is paramount. The “NOPB” suffix designates the no-lead, lead-free package option.