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Automotive Switching Regulators

ROHM Semiconductor Automotive Switching Regulators are AEC-Q100 qualified power management ICs. These ROHM Semiconductor switching regulators consist of regulators with or without integrated FET, buck converters (both synchronous and nonsynchronous), and buck-boost converters. Automobile switching regulators are available from single-channel to multi-channel system power supply configurations for broad compatibility. These switching regulators come in various packages with built-in circuit protection functions to match the requirements of the designers.

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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 Sync Buck DC/DC Conv 3A MOSFET; 2.7-5.5V BD9S300MUF-CE2 ROHM Semiconductor 1: ¥433.5 610In Stock 3,000Expected 12/15/2026	Mfr. Part # BD9S300MUF-CE2 Mouser Part # 755-BD9S300MUF-CE2	ROHM Semiconductor	Switching Voltage Regulators Sync Buck DC/DC Conv 3A MOSFET; 2.7-5.5V Learn More about ROHM Semiconductor rohm bd9s automotive dcdc converters	Datasheet	610In Stock 3,000Expected 12/15/2026	Cut Tape ¥433.5 ¥323.9 ¥295.7 ¥265.8 View Reel ¥229.2 ¥250.8 ¥244.2 ¥235.9 ¥229.2 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators Quick Buck Booster™, Nano Pulse Control™, 2.7 V to 36 V Input, 2 A Single Buck DC/DC Converter with Boost Function BD8P250MUF-CE2 ROHM Semiconductor 1: ¥740.8 230In Stock 5,000Expected 12/4/2026	Mfr. Part # BD8P250MUF-CE2 Mouser Part # 755-BD8P250MUF-CE2	ROHM Semiconductor	Switching Voltage Regulators Quick Buck Booster™, Nano Pulse Control™, 2.7 V to 36 V Input, 2 A Single Buck DC/DC Converter with Boost Function Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	230In Stock 5,000Expected 12/4/2026	Cut Tape ¥740.8 ¥559.8 ¥514.9 ¥465.1 Reel ¥406.9 View ¥441.8 ¥440.2 ¥418.6 ¥398.6 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators Stp-Dwn Swtch Regltr 3.5-36V; HTSOP-J8 BD90640EFJ-CE2 ROHM Semiconductor 1: ¥413.6 209In Stock NRND	Mfr. Part # BD90640EFJ-CE2 Mouser Part # 755-BD90640EFJ-CE2 NRND	ROHM Semiconductor	Switching Voltage Regulators Stp-Dwn Swtch Regltr 3.5-36V; HTSOP-J8 Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	209In Stock	Cut Tape ¥413.6 ¥307.3 ¥279 ¥250.8 View Reel ¥209.3 ¥235.9 ¥229.2 ¥219.3 ¥209.3 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 1ch Buck Converter 4.5V-42V; 3.5A FET BD9G401EFJ-ME2 ROHM Semiconductor 1: ¥779 404In Stock NRND	Mfr. Part # BD9G401EFJ-ME2 Mouser Part # 755-BD9G401EFJ-ME2 NRND	ROHM Semiconductor	Switching Voltage Regulators 1ch Buck Converter 4.5V-42V; 3.5A FET Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	404In Stock	Cut Tape ¥779 ¥588 ¥541.5 ¥490 View Reel ¥420.2 ¥465.1 ¥461.8 ¥446.8 ¥420.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators IC Pwr Swtch Reg Controller BD9015KV-ME2 ROHM Semiconductor 1,500: ¥455.1 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # BD9015KV-ME2 Mouser Part # 755-BD9015KV-ME2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Controller Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel ¥455.1	Min.: 1,500 Mult.: 1,500 : 1,500
Power Management Specialized - PMIC Sys Reg for Auto 4-45V; HTSSOP-B24 BD39012EFV-CE2 ROHM Semiconductor 2,000: ¥345.5 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # BD39012EFV-CE2 Mouser Part # 755-BD39012EFV-CE2	ROHM Semiconductor	Power Management Specialized - PMIC Sys Reg for Auto 4-45V; HTSSOP-B24 Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	Non-Stocked Lead-Time 14 Weeks	Reel ¥345.5 ¥340.5	Min.: 2,000 Mult.: 2,000 : 2,000
Power Management Specialized - PMIC Multi-Channel PS IC for Car Audio Sys BD49101AEFS-ME2 ROHM Semiconductor 1,500: ¥609.6 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # BD49101AEFS-ME2 Mouser Part # 755-BD49101AEFS-ME2	ROHM Semiconductor	Power Management Specialized - PMIC Multi-Channel PS IC for Car Audio Sys Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	Non-Stocked Lead-Time 14 Weeks	Reel ¥609.6 ¥589.7	Min.: 1,500 Mult.: 1,500 : 1,500
Power Management Specialized - PMIC Mult Pwr Supply IC 5.5-25V; HTSSOP-A44R BD49101ARFS-ME2 ROHM Semiconductor 1,500: ¥619.6 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # BD49101ARFS-ME2 Mouser Part # 755-BD49101ARFS-ME2	ROHM Semiconductor	Power Management Specialized - PMIC Mult Pwr Supply IC 5.5-25V; HTSSOP-A44R Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel ¥619.6	Min.: 1,500 Mult.: 1,500 : 1,500
Switching Voltage Regulators Sync Step-Dwn Cnvrtr 2.6-5.5V; 0.3-2.4MHz BD90521MUV-CE2 ROHM Semiconductor 2,500: ¥280.7 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # BD90521MUV-CE2 Mouser Part # 755-BD90521MUV-CE2	ROHM Semiconductor	Switching Voltage Regulators Sync Step-Dwn Cnvrtr 2.6-5.5V; 0.3-2.4MHz Learn More about ROHM Semiconductor rohm automotive switching regulators	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel ¥280.7 ¥279	Min.: 2,500 Mult.: 2,500 : 2,500
Switching Voltage Regulators Secondary switching regulator, 7V, 2.7 5.5V, 1.2V(Typ), 1.0A, 2.2MHz BD9S110NUX-CE2 ROHM Semiconductor 4,000: ¥157.6 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # BD9S110NUX-CE2 Mouser Part # 755-BD9S110NUX-CE2	ROHM Semiconductor	Switching Voltage Regulators Secondary switching regulator, 7V, 2.7 5.5V, 1.2V(Typ), 1.0A, 2.2MHz Learn More about ROHM Semiconductor rohm bd9s automotive dcdc converters	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel ¥157.6	Min.: 4,000 Mult.: 4,000 : 4,000