TPS54302DDCR

• 4.5V to 28V Input range, Single 3A Output
• Synchronous Buck Topology with Integrated Switches
• 400k Hz Switching frequency, Up to 100% Duty Cycle
• 45uA Nominal Supply Current
• 6-Pin TSOT-23 package, 2.9mm X 1.6mm, 1.1mm Height
• -40C to +125C Operating range, 125C Max Junction temperature; RoHS compliant, Lead Free

The Texas Instruments TPS54302DDCR is a synchronous step-down (buck) DC-DC converter that accepts a 4.5V to 28V input and delivers up to 3A on a single output. A synchronous buck integrates both power switches on-chip, so the design needs only an inductor, input and output capacitors, and a feedback divider. The TPS54302DDCR switches at 400k Hz, supports up to 100% duty cycle, draws 45uA of nominal supply current, and comes in a 6-pin TSOT-23 package measuring 2.9mm by 1.6mm. It is rated from -40C to +125C with a 125C maximum junction temperature and ships on tape and reel.

A wide-input 3A buck in a TSOT-23 is used to generate local rails from 12V or 24V distribution: point-of-load 5V and 3.3V supplies on industrial and automotive-adjacent boards, 24V sensor and actuator modules, building automation and metering equipment, appliance control boards, and general-purpose embedded systems. The 100% duty cycle capability lets the output track a falling input, which matters in battery and unregulated-supply designs. Buyers are typically power-supply and embedded hardware engineers, industrial equipment OEMs, and EMS providers buying to a released BOM.