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BD9x Integrated MOSFET DC-DC Buck Converters

ROHM Semiconductor BD9x Integrated MOSFET DC-DC Buck Converters are synchronous buck switching regulators with built-in power MOSFETs. These ICs provide currents in a range from 1A to 6A. ROHM BD9x DC-DC Buck Converters deliver fast transient response by employing a constant on-time control system. This allows high oscillating frequency at low inductance. The devices employ an original constant on-time control method that provides low consumption at light load. This feature makes these devices ideal for equipment that demands minimal standby power consumption.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9A300MUV-E2 ROHM Semiconductor 1: ¥177.7 5,937Expected 1/28/2027	Mfr. Part # BD9A300MUV-E2 Mouser Part # 755-BD9A300MUV-E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	5,937Expected 1/28/2027	Cut Tape ¥177.7 ¥126.7 ¥114.1 ¥100.3 Reel ¥83.1 View ¥93.8 ¥89.9 ¥87 ¥81.2 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 4.5-18Vin,3A MOSFET DC/DC Converter BD9C301FJ-E2 ROHM Semiconductor 1: ¥252.5 9,298Expected 1/28/2027	Mfr. Part # BD9C301FJ-E2 Mouser Part # 755-BD9C301FJ-E2	ROHM Semiconductor	Switching Voltage Regulators 4.5-18Vin,3A MOSFET DC/DC Converter Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	9,298Expected 1/28/2027	Cut Tape ¥252.5 ¥184.4 ¥167.8 ¥147.5 Reel ¥123.4 View ¥138.5 ¥133.2 ¥131.6 ¥120.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC BD9E104FJ-E2 ROHM Semiconductor 1: ¥189.4 4,944On Order	Mfr. Part # BD9E104FJ-E2 Mouser Part # 755-BD9E104FJ-E2	ROHM Semiconductor	Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	4,944On Order On Order Ship Dates Mfr. #: BD9E104FJ-E2 Stock: 0 On Order: 2,444 Expected 10/29/2026 2,500 Expected 5/17/2027 Factory Lead-Time: 14 Weeks	Cut Tape ¥189.4 ¥136.5 ¥123.4 ¥106 View Reel ¥86.7 ¥99 ¥95 ¥92.2 ¥86.7 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 12-76V 1Ch Buck Conv w/ Integrated FET BD9G341AEFJ-LBE2 ROHM Semiconductor 1: ¥847.1 4,892Expected 11/3/2026	Mfr. Part # BD9G341AEFJ-LBE2 Mouser Part # 755-BD9G341AEFJ-LBE2	ROHM Semiconductor	Switching Voltage Regulators 12-76V 1Ch Buck Conv w/ Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	4,892Expected 11/3/2026	Cut Tape ¥847.1 ¥641.1 ¥589.7 ¥533.2 View Reel ¥458.4 ¥506.6 ¥504.9 ¥475 ¥458.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators Ind Bck Sync 4.5-18V w/ Integrated FET BD9C301FJ-LBGH2 ROHM Semiconductor 1: ¥686 250Expected 11/20/2026	Mfr. Part # BD9C301FJ-LBGH2 Mouser Part # 755-BD9C301FJ-LBGH2	ROHM Semiconductor	Switching Voltage Regulators Ind Bck Sync 4.5-18V w/ Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	250Expected 11/20/2026	Cut Tape ¥686 ¥518.2 ¥476.7 ¥430.2 Reel ¥406.9 View ¥395.3 ¥375.4 ¥368.7 MouseReel Available	Min.: 1 Mult.: 1 : 250
Switching Voltage Regulators Power Management Switches BD9106FVM-LBTR ROHM Semiconductor 1: ¥438.5 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # BD9106FVM-LBTR Mouser Part # 755-BD9106FVM-LBTR	ROHM Semiconductor	Switching Voltage Regulators Power Management Switches Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape ¥438.5 ¥325.6 ¥297.3 ¥265.8 View Reel ¥222.6 ¥250.8 ¥244.2 ¥232.5 ¥222.6 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 1.0-2.5V Output With Bulit in MOSFET BD9130NV-E2 ROHM Semiconductor 1: ¥609.6 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # BD9130NV-E2 Mouser Part # 755-BD9130NV-E2	ROHM Semiconductor	Switching Voltage Regulators 1.0-2.5V Output With Bulit in MOSFET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape ¥609.6 ¥460.1 ¥421.9 ¥380.4 Reel ¥325.6 View ¥360.4 ¥358.8 ¥343.8 ¥322.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Power Management IC Development Tools Evaluation board for BD9E104FJ BD9E104FJ-EVK-001 ROHM Semiconductor 1: ¥5,662.3 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # BD9E104FJ-EVK-001 Mouser Part # 755-BD9E104FJ-EVK001	ROHM Semiconductor	Power Management IC Development Tools Evaluation board for BD9E104FJ Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	Non-Stocked Lead-Time 12 Weeks	¥5,662.3	Min.: 1 Mult.: 1
Switching Voltage Regulators 4CH Internal Pwr MOSFET Reg BD9866GUL-E2 ROHM Semiconductor 2,500: ¥431.9 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # BD9866GUL-E2 Mouser Part # 755-BD9866GUL-E2	ROHM Semiconductor	Switching Voltage Regulators 4CH Internal Pwr MOSFET Reg Learn More about ROHM Semiconductor rohm switching regulator boost converters	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel ¥431.9	Min.: 2,500 Mult.: 2,500 : 2,500
Switching Voltage Regulators 4.5V to 28V Input, 2.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter: BD9E201FP4-Z is a single synchronous buck DC/DC converter with built-in low on-resistance power MOSFETs. BD9E201FP4-Z is a current mode control. It includes internal p BD9E201FP4-ZTL ROHM Semiconductor 1: ¥252.5 Non-Stocked Lead-Time 20 Weeks	Mfr. Part # BD9E201FP4-ZTL Mouser Part # 755-BD9E201FP4-ZTL	ROHM Semiconductor	Switching Voltage Regulators 4.5V to 28V Input, 2.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter: BD9E201FP4-Z is a single synchronous buck DC/DC converter with built-in low on-resistance power MOSFETs. BD9E201FP4-Z is a current mode control. It includes internal p Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape ¥252.5 ¥184.4 ¥167.8 ¥148 Reel ¥126.2 View ¥139 ¥133.7 ¥132.2 ¥122.7	Min.: 1 Mult.: 1 : 3,500
Switching Voltage Regulators ROHM Semiconductor BD9261EFV-E2 BD9261EFV-E2 ROHM Semiconductor 2,500: ¥242.5 Non-Stocked	Mfr. Part # BD9261EFV-E2 Mouser Part # 755-BD9261EFV-E2	ROHM Semiconductor	Switching Voltage Regulators Learn More about ROHM Semiconductor rohm industrial product solutions		Non-Stocked	Reel ¥242.5 ¥240.8	Min.: 2,500 Mult.: 2,500 : 2,500

BD9x Integrated MOSFET DC-DC Buck Converters

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