What this part is and where it fits
The Maxim Integrated MAX16984SATI/V+ is a single-output USB converter IC designed for automotive power systems requiring a regulated 5V rail from a wide input range of 4.5V to 28V. It is qualified to AEC-Q100, making it suitable for under-hood and cabin electronics where temperature extremes from -40°C to 125°C are routine. The device integrates the converter and USB power management in a single 28-TQFN (5x5) package with an exposed pad for thermal dissipation.
Key ratings and what they mean for the BOM
The 4.5V to 28V input range covers both nominal 12V automotive battery and load-dump transients without external pre-regulation. The single 5V output at the rated current handles USB VBUS and peripheral power in infotainment, telematics, and body-control modules. The -40°C to 125°C operating temperature range matches the AEC-Q100 Grade 1 requirement for engine bay and under-hood placement. The 28-TQFN (5x5) exposed-pad package demands a thermal via array under the pad to keep junction temperature within limits at full load; the layout engineer should allocate the pad area and via count early in the PCB stack-up.
Lifecycle and sourcing reality
The MAX16984SATI/V+ carries an Active lifecycle status with ROHS3 compliance. For production BOMs requiring AEC-Q100 qualification, this part is a current-design-in candidate with no near-term obsolescence risk.
