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Rohm BD9G341EFJ

BD9G341EFJ -1ch Buck Converter Integrated FET

The BD9G341EFJ is a buck switching regulator with integrated 150m Ω power MOSFET. Current mode architecture provides fast transient response and a simple phase compensation setup.

The operating frequency is programmable from 50kHz to 750kHz. Additional protection features are included such as Over Current Protection, Thermal shutdown and Under voltage lockout. The under voltage lockout and hysteresis can be set by external resistor

Key features

  • Wide input voltage range from 12V to 76V.
  • Integrated 80V/3.5A/150mΩ NchFET.
  • Current mode.
  • Variable frequency from 50kHz to 750kHz.
  • Accurate reference voltage.( 1.0 V±1.5 %).
  • Precision EN threshold ( ±3%).
  • Soft-start function
  • 0uA Standby current
  • Over Current Protection (OCP): Under Voltage, Lockout(UVLO), Thermal-Shutdown(TSD),Over, Voltage Protection (OVP), Thermally enhanced HTSOP-J8 package


  • Industrial distributed power applications
  • Automotive Application
  • Battery powered equipment