TPS63900DSKR – TEXAS INSTRUMENTS

The TPS63900DSKR is a highly integrated, 1.8V to 5.5V input synchronous step-down converter from Texas Instruments, packaged in a space-saving 6-pin WSON (WCSP-6) package. It features a fixed 3.3V output with a maximum output current of 1A, making it ideal for powering low-power applications requiring a stable 3.3V rail. The device utilizes a synchronous rectification topology, resulting in high efficiency (typically >90% at 1A load) and low quiescent current (Iq < 10µA), contributing to extended battery life in portable devices. Its internal soft-start feature minimizes inrush current, protecting sensitive components during power-up._x000D_ _x000D_ Key features include an enable pin for power control, overcurrent protection with automatic recovery, and thermal shutdown for enhanced reliability. The TPS63900DSKR is particularly well-suited for applications such as portable medical devices, wearables, and battery-powered IoT sensors where small size, high efficiency, and stable voltage output are critical. Its ease of use, requiring minimal external components (only input and output capacitors), simplifies circuit design and reduces board space. The device's robust protection features ensure reliable operation even under challenging conditions. Note that its fixed 3.3V output limits its applicability to systems requiring this specific voltage.