TPS54388CQRTERQ1

• 3 A Output current, Single Regulated Output
• 2.95 V to 6 V Input Supply Range
• Synchronous Buck Topology with Integrated Switches
• 100% Maximum Duty Cycle
• 515 uA Nominal Supply Current
• 16-Pin 3 Mm X 3 Mm package, 0.8 Mm profile; -40C to +125C Operation

The TPS54388CQRTERQ1 from Texas Instruments is an automotive-qualified synchronous buck converter rated for 3 A of output current from a 2.95 V to 6 V input supply. A synchronous buck integrates both switching devices on-die, so no external catch diode is required and conversion efficiency is higher than in a non-synchronous design. The part supports up to 100% maximum duty cycle, draws a nominal 515 uA supply current, and provides a single regulated output. It is supplied in a 16-pin 3 mm x 3 mm package with a 0.8 mm profile and is rated from -40C to +125C ambient with a 150C maximum junction temperature.

A 3 A synchronous buck operating from a 2.95 V to 6 V input is used to generate point-of-load rails from an existing 3.3 V or 5 V bus: processor cores, DDR memory supplies, sensor and analog rails, and USB or peripheral power. The 100% duty-cycle capability keeps the output in regulation as the input droops toward the output voltage, which is valuable on rails fed from an already-regulated 5 V supply. Its -40C to +125C ambient rating and automotive qualification point to infotainment, instrument clusters, ADAS sensor modules and body electronics, and the same specification suits harsh-environment industrial equipment. Automotive tier-one designers and industrial power engineers are the typical buyers.