1A buck converter in a 1.5mm² footprint
The TLV62568DRLT is a 1A continuous output step-down (buck) converter from Texas Instruments, switching at 1.5MHz. Synchronous rectification integrated in the package eliminates the external Schottky diode, saving board area and reducing BOM count — the efficiency gain matters most at moderate loads where diode conduction losses would otherwise dominate.
Switching frequency and loop compensation
The frequency also stays above the AM radio band, reducing radiated EMI coupling in consumer and industrial enclosures. Because the output is adjustable from 0.6V up to the input voltage (max 5.5V), the same PCB layout can serve multiple voltage rails by swapping the feedback divider — useful for a design that runs both 1.2V core and 3.3V I/O from a single 5V bus.
Temperature grade and environment
The 125°C TJ ceiling means the 1A output must be derated above ~85°C ambient depending on board copper and airflow — the SOT-563's thermal resistance (junction-to-ambient) is roughly 180°C/W without a ground plane, so a 1W dissipation at 85°C ambient already reaches the limit.
Active production and compliance
Packaging options include Tape & Reel (TR) for automated pick-and-place and Cut Tape (CT) for prototyping or low-volume builds. The SOT-563 (SOT-5X3 supplier package) footprint is standard across TI's 1A buck family, so a single solder paste stencil serves multiple BOM variants.