The BU33JA2MNVX-CTL: ROHS3 compliance is confirmed on the manufacturer's documentation — no exemption-based restrictions that would trip a European or California materials declaration.
The 3.3 V fixed output at 200 mA is the core rail spec. Budget the headroom. 90 µA quiescent current is the idle draw from the input rail when the output is lightly loaded. For an always-on automotive module that spends most of its life in sleep, that 90 µA is the floor of the system's dark current budget — compare it against the module's total sleep allowance before adding a load switch.
AEC-Q100 Grade 1 — the under-hood temperature band
Grade 1 is the widest temperature band for automotive ICs — it covers engine-bay, transmission, and under-hood ambient where the air temperature hits 105°C and the local board temperature can exceed that. The 125°C absolute maximum junction temperature gives margin above the 105°C ambient, but the dropout voltage and output current must be derated per the datasheet thermal resistance at the high end.
The 4-UDFN Exposed Pad package with supplier device code SSON004R1010 is a 1.0 mm × 1.0 mm body, 0.65 mm pitch. The ON/OFF control pin lets a system supervisor or ignition signal gate the output, pulling the quiescent current to near zero when the module is off.