
ROHM Semiconductor
General Description
The BD18397/98RUV-M are 2 ch/3 ch synchronous buck DC/DC LED drivers with using on-time topology supporting near fixed switching frequency and fast switching duty regulation and with using average LED current feed buck topology for more accreted LED current regulation system over wide input, LED output range.
FEATUREs
◾ AEC-Q100 Qualified(Note 1)
◾ ISO 26262 Process Compliant to Support ASIL-B
◾ On-time Topology for Near Fixed Frequency Switching
◾ Average LED Current Regulation
◾ Protection Diodes Less for Current Sense Pins
◾ Cycle-by-cycle Switch Over Current Protection
◾ Thermal Shutdown (TSD)
◾ Thermal Sensor Reading
◾ Serial Peripheral Interface (SPI)
◾ LIMP-HOME Mode
APPLICATIONs
◾ Automotive Exterior Lamps
Rear, Turn, DRL/Position, Fog, High/Low Beam etc.