The ROHM BD8374EFJ-ME2 is a single-channel linear LED driver designed for automotive-grade applications. It integrates the internal switch and operates as a linear current sink, making it a straightforward choice for driving a single LED or a small series string without the switching noise of a DC-DC converter. With an input voltage range from 4.5 V to 42 V, it covers nominal automotive battery voltage, cold-crank dips, and load-dump transients. The driver supports PWM dimming from 100 Hz up to 5 kHz, which is suitable for interior and exterior lighting where flicker-free dimming and EMI control matter.
500 mA output in a thermally aware package
Each channel delivers up to 500 mA. At this current level, thermal management is not optional. Without proper heat sinking, the thermal shutdown will trip well before 500 mA continuous in a warm under-hood environment.
Automotive qualification — AEC-Q100 and temperature grade
It is a fit for exterior lighting modules (tail lights, daytime running lights) and interior ambient lighting where the ambient temperature can spike above 85°C.