TPS53319DQPR – TEXAS INSTRUMENTS

The TPS53319DQPR is a 150kHz, 4A synchronous step-down converter from Texas Instruments, packaged in a thermally enhanced, 20-pin QFN (4x4mm) package. It operates from a 4.5V to 18V input voltage range and provides a highly efficient, adjustable output voltage typically ranging from 0.8V to 5.5V. Key features include an internal 4A switch, enabling high-current applications without external MOSFETs. Its integrated compensation network simplifies design and reduces component count, while the programmable soft-start minimizes inrush current. The device employs a constant frequency, peak current mode control architecture, offering excellent transient response and load regulation. Protection features include cycle-by-cycle current limiting, thermal shutdown, and short-circuit protection, enhancing system robustness. The TPS53319DQPR is ideally suited for applications requiring a compact, high-efficiency solution, such as powering high-performance microprocessors, FPGAs, and other demanding digital logic in space-constrained portable devices or industrial control systems where efficiency and reliability are paramount. Its adjustable output voltage makes it versatile for various power supply designs.