Flyback controller for isolated offline supplies
The BM1R00149F-E2: The ROHM BM1R00149F- is an offline flyback controller IC in an 8-SOP package, designed for isolated AC-DC power supplies where the switching element is external (Internal Switch(s): No). Its flyback topology suits auxiliary and bias supplies in industrial, appliance, and IoT applications where galvanic isolation between primary and secondary is required (Output Isolation: Isolated).
28 V startup, 2.7-32 V supply range
The controller starts from a 28 V startup threshold and operates across a 2.7 V to 32 V Vcc/Vdd range, giving the bias winding design flexibility for different output power levels. On-chip fault protection includes over-voltage and short-circuit detection, reducing external component count in the primary-side sense circuit.
8-SOP package, -40 to 105 °C range
The -40 °C to 105 °C operating temperature range covers industrial and outdoor-rated equipment without requiring a heatsink at typical bias supply power levels.
Active lifecycle, RoHS3 compliant
ROHS3 compliant, it meets the latest EU restriction directive for lead and other hazardous substances in electronic equipment.