.hide-partial { max-height: none; } .show-more { display: none; }

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.

All Results (136)

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9326EFJ-E2 ROHM Semiconductor 1: £1.48 597In Stock 2,500Expected 14/12/2026	Mfr. Part No. BD9326EFJ-E2 Mouser Part No 755-BD9326EFJ-E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	597In Stock 2,500Expected 14/12/2026	Cut Tape £1.48 £1.08 £0.986 £0.871 Reel £0.733 View £0.818 £0.788 £0.731 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
LDO Voltage Regulators QuiCur, Automotive 500mA, Adjustable Output LDO Regulators With Enable Input BD900M5WEFJ-CE2 ROHM Semiconductor 1: £0.934 449In Stock 17,500On Order	Mfr. Part No. BD900M5WEFJ-CE2 Mouser Part No 755-BD900M5WEFJ-CE2	ROHM Semiconductor	LDO Voltage Regulators QuiCur, Automotive 500mA, Adjustable Output LDO Regulators With Enable Input Learn More about ROHM Semiconductor rohm quicur regulators	Datasheet	449In Stock 17,500On Order On Order Ship Dates Mfr. No: BD900M5WEFJ-CE2 Stock: 449 Can Dispatch Immediately On Order: 2,500 Expected 17/02/2027 7,500 Expected 22/02/2027 7,500 Expected 01/03/2027 Factory Lead Time: 18 Weeks	Cut Tape £0.934 £0.672 £0.608 £0.549 Reel £0.449 View £0.514 £0.494 £0.485 £0.438	Min.: 1 Mult.: 1 : 2,500
Switching Controllers 60V Synchronous Step-down Regulator BD9611MUV-E2 ROHM Semiconductor 1: £1.75 1,112In Stock 2,500Expected 26/01/2027	Mfr. Part No. BD9611MUV-E2 Mouser Part No 755-BD9611MUV-E2	ROHM Semiconductor	Switching Controllers 60V Synchronous Step-down Regulator Learn More about ROHM Semiconductor rohm semi BD9611MUV E2 stepdown switch regulators	Datasheet	1,112In Stock 2,500Expected 26/01/2027	Cut Tape £1.75 £1.29 £1.18 £1.06 Reel £0.89 View £0.995 £0.969 £0.943 £0.849 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9873CP-V5E2 ROHM Semiconductor 1: £2.56 260In Stock 500Expected 03/11/2026	Mfr. Part No. BD9873CP-V5E2 Mouser Part No 755-BD9873CP-V5E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	260In Stock 500Expected 03/11/2026	Cut Tape £2.56 £1.89 £1.71 £1.53 Reel £1.41 View £1.44 £1.37 £1.28 £1.26	Min.: 1 Mult.: 1 : 500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9874CP-V5E2 ROHM Semiconductor 1: £1.88 387In Stock	Mfr. Part No. BD9874CP-V5E2 Mouser Part No 755-BD9874CP-V5E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	387In Stock	Cut Tape £1.88 £1.40 £1.27 £1.15 Reel £1.04 View £1.08 £0.995 £0.986	Min.: 1 Mult.: 1 : 500
Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv BD9B301MUV-LBE2 ROHM Semiconductor 1: £2.60 369In Stock 3,000Expected 01/02/2027	Mfr. Part No. BD9B301MUV-LBE2 Mouser Part No 755-BD9B301MUV-LBE2	ROHM Semiconductor	Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	369In Stock 3,000Expected 01/02/2027	Cut Tape £2.60 £1.96 £1.79 £1.61 View Reel £1.35 £1.52 £1.48 £1.41 £1.35 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 2.7-5.5v DC/DC Conv w/ 5A MOSFET BD9B500MUV-E2 ROHM Semiconductor 1: £0.952 577In Stock	Mfr. Part No. BD9B500MUV-E2 Mouser Part No 755-BD9B500MUV-E2	ROHM Semiconductor	Switching Voltage Regulators 2.7-5.5v DC/DC Conv w/ 5A MOSFET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	577In Stock	Cut Tape £0.952 £0.695 £0.629 £0.555 Reel £0.464 View £0.52 £0.499 £0.477 £0.457 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9D320EFJ-E2 ROHM Semiconductor 1: £0.578 1,750In Stock 70,000On Order	Mfr. Part No. BD9D320EFJ-E2 Mouser Part No 755-BD9D320EFJ-E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	1,750In Stock 70,000On Order On Order Ship Dates Mfr. No: BD9D320EFJ-E2 Stock: 1,750 Can Dispatch Immediately On Order: 25,000 Expected 26/11/2026 45,000 Expected 01/02/2027 Factory Lead Time: 14 Weeks	Cut Tape £0.578 £0.406 £0.364 £0.319 Reel £0.26 View £0.296 £0.283 £0.272 £0.253 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET BD9E100FJ-LBGH2 ROHM Semiconductor 1: £2.65 100In Stock 250Expected 11/11/2026	Mfr. Part No. BD9E100FJ-LBGH2 Mouser Part No 755-BD9E100FJ-LBGH2	ROHM Semiconductor	Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	100In Stock 250Expected 11/11/2026	Cut Tape £2.65 £2.01 £1.84 £1.66 Reel £1.56 View £1.48 £1.44 £1.42 MouseReel Available	Min.: 1 Mult.: 1 : 250
Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET BD9E101FJ-LBGH2 ROHM Semiconductor 1: £2.65 39In Stock	Mfr. Part No. BD9E101FJ-LBGH2 Mouser Part No 755-BD9E101FJ-LBGH2	ROHM Semiconductor	Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	39In Stock	Cut Tape £2.65 £2.01 £1.84 £1.66 Reel £1.56 View £1.54 £1.49 £1.48 £1.46 MouseReel Available	Min.: 1 Mult.: 1 : 250
Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC BD9E104FJ-E2 ROHM Semiconductor 1: £0.856 2,444In Stock 2,500Expected 29/01/2027	Mfr. Part No. BD9E104FJ-E2 Mouser Part No 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	2,444In Stock 2,500Expected 29/01/2027	Cut Tape £0.856 £0.617 £0.558 £0.479 View Reel £0.392 £0.448 £0.43 £0.416 £0.392 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 7-36Vin,2.5A MOSFET DC/DC Converter BD9E301EFJ-LBE2 ROHM Semiconductor 1: £3.52 82In Stock 2,500Expected 26/01/2027	Mfr. Part No. BD9E301EFJ-LBE2 Mouser Part No 755-BD9E301EFJ-LBE2	ROHM Semiconductor	Switching Voltage Regulators 7-36Vin,2.5A MOSFET DC/DC Converter Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	82In Stock 2,500Expected 26/01/2027	Cut Tape £3.52 £2.65 £2.44 £2.22 Reel £1.90 View £2.10 £2.09 £1.96 £1.89 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 7-28V 3A Int MOSFET Buck DC/DC Conv IC BD9E302EFJ-E2 ROHM Semiconductor 1: £0.882 5In Stock 15,000On Order	Mfr. Part No. BD9E302EFJ-E2 Mouser Part No 755-BD9E302EFJ-E2	ROHM Semiconductor	Switching Voltage Regulators 7-28V 3A Int MOSFET Buck DC/DC Conv IC Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	5In Stock 15,000On Order On Order Ship Dates Mfr. No: BD9E302EFJ-E2 Stock: 5 Can Dispatch Immediately On Order: 5,000 Expected 03/12/2026 10,000 Expected 28/12/2026 Factory Lead Time: 14 Weeks	Cut Tape £0.882 £0.634 £0.572 £0.504 View Reel £0.40 £0.471 £0.452 £0.439 £0.40 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators SD Switching Reg BD9G101G-TR ROHM Semiconductor 1: £1.18 292In Stock 24,000On Order	Mfr. Part No. BD9G101G-TR Mouser Part No 755-BD9G101G-TR	ROHM Semiconductor	Switching Voltage Regulators SD Switching Reg Learn More about ROHM Semiconductor rohm bd9g101g regulators	Datasheet	292In Stock 24,000On Order On Order Ship Dates Mfr. No: BD9G101G-TR Stock: 292 Can Dispatch Immediately On Order: 12,000 Expected 14/12/2026 12,000 Expected 11/02/2027 Factory Lead Time: 15 Weeks	Cut Tape £1.18 £0.863 £0.78 £0.693 Reel £0.58 View £0.651 £0.626 £0.621 £0.567 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 1ch Buck Converter Integrated FET BD9G341AEFJ-E2 ROHM Semiconductor 1: £3.21 322In Stock 15,000Expected 29/01/2027	Mfr. Part No. BD9G341AEFJ-E2 Mouser Part No 755-BD9G341AEFJ-E2	ROHM Semiconductor	Switching Voltage Regulators 1ch Buck Converter Integrated FET Learn More about ROHM Semiconductor rohm bd9g341aefj converter	Datasheet	322In Stock 15,000Expected 29/01/2027	Cut Tape £3.21 £2.43 £2.23 £2.01 View Reel £1.77 £1.90 £1.89 £1.85 £1.77 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators High Eff. Stepdown Sw Reg 2A 4.5-13.2V BD9141MUV-E2 ROHM Semiconductor 1: £3.00 52In Stock	Mfr. Part No. BD9141MUV-E2 Mouser Part No 755-BD9141MUV-E2	ROHM Semiconductor	Switching Voltage Regulators High Eff. Stepdown Sw Reg 2A 4.5-13.2V Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	52In Stock	Cut Tape £3.00 £2.24 £2.05 £1.84 Reel £1.59 View £1.75 £1.69 £1.62 £1.58 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 4.2-18V 100-800kHz 1 Chan Step-Up BD9306AFVM-TR ROHM Semiconductor 1: £1.22 691In Stock	Mfr. Part No. BD9306AFVM-TR Mouser Part No 755-BD9306AFVM-TR	ROHM Semiconductor	Switching Voltage Regulators 4.2-18V 100-800kHz 1 Chan Step-Up Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	691In Stock	Cut Tape £1.22 £0.899 £0.818 £0.722 Reel £0.622 View £0.679 £0.653 £0.648 £0.608 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9859EFJ-E2 ROHM Semiconductor 1: £0.969 1,005In Stock	Mfr. Part No. BD9859EFJ-E2 Mouser Part No 755-BD9859EFJ-E2	ROHM Semiconductor	Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	1,005In Stock	Cut Tape £0.969 £0.698 £0.632 £0.559 Reel £0.466 View £0.523 £0.502 £0.48 £0.455 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 7.0V to 36V Input, 3.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter BD9E303UEFJ-LBE2 ROHM Semiconductor 1: £1.82 228In Stock NRND	Mfr. Part No. BD9E303UEFJ-LBE2 Mouser Part No 755-BD9E303UEFJ-LBE2 NRND	ROHM Semiconductor	Switching Voltage Regulators 7.0V to 36V Input, 3.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter	Datasheet	228In Stock	Cut Tape £1.82 £1.35 £1.24 £1.11 Reel £0.943 View £1.05 £1.02 £0.995 £0.908	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators 3.3V Output Voltage BD9109FVM-TR ROHM Semiconductor 1: £1.65 291In Stock NRND	Mfr. Part No. BD9109FVM-TR Mouser Part No 755-BD9109FVM-TR NRND	ROHM Semiconductor	Switching Voltage Regulators 3.3V Output Voltage Learn More about ROHM Semiconductor rohm bd91xx integrated fet	Datasheet	291In Stock	Cut Tape £1.65 £1.25 £1.14 £1.02 Reel View £0.96 £0.934 £0.899 £0.834 £0.826 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 3A Buck Cnv 0.6-3.3V Auto PFM/PWM Adjst BD9B331GWZ-E2 ROHM Semiconductor 1: £1.34 1,220In Stock NRND	Mfr. Part No. BD9B331GWZ-E2 Mouser Part No 755-BD9B331GWZ-E2 NRND	ROHM Semiconductor	Switching Voltage Regulators 3A Buck Cnv 0.6-3.3V Auto PFM/PWM Adjst	Datasheet	1,220In Stock	Cut Tape £1.34 £0.986 £0.89 £0.796 Reel View £0.751 £0.724 £0.72 £0.676 £0.673 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 1ch Buck Cnvrtr 4.5-42V; HTSOP-J8ES BD9G201EFJ-LBE2 ROHM Semiconductor 1: £1.85 330In Stock NRND	Mfr. Part No. BD9G201EFJ-LBE2 Mouser Part No 755-BD9G201EFJ-LBE2 NRND	ROHM Semiconductor	Switching Voltage Regulators 1ch Buck Cnvrtr 4.5-42V; HTSOP-J8ES Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	330In Stock	Cut Tape £1.85 £1.38 £1.26 £1.13 Reel View £1.07 £1.04 £1.01 £0.952 £0.943 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
LDO Voltage Regulators QuiCur, Automotive 500mA 5.0V, Fixed Output LDO Regulators With Enable Input BD950M5WEFJ-CE2 ROHM Semiconductor 1: £0.952 4,969Expected 31/12/2026	Mfr. Part No. BD950M5WEFJ-CE2 Mouser Part No 755-BD950M5WEFJ-CE2	ROHM Semiconductor	LDO Voltage Regulators QuiCur, Automotive 500mA 5.0V, Fixed Output LDO Regulators With Enable Input Learn More about ROHM Semiconductor rohm quicur regulators	Datasheet	4,969Expected 31/12/2026	Cut Tape £0.952 £0.685 £0.621 £0.549 Reel £0.449 View £0.514 £0.494 £0.485 £0.438 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9A300MUV-E2 ROHM Semiconductor 1: £0.803 5,937Expected 28/01/2027	Mfr. Part No. BD9A300MUV-E2 Mouser Part No 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 28/01/2027	Cut Tape £0.803 £0.573 £0.516 £0.453 Reel £0.375 View £0.424 £0.406 £0.394 £0.368 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Switching Voltage Regulators 2.7V-5.5V 6A MOSFET Sngl Sync Buck Conv BD9A600MUV-E2 ROHM Semiconductor 1: £0.943 19,467On Order	Mfr. Part No. BD9A600MUV-E2 Mouser Part No 755-BD9A600MUV-E2	ROHM Semiconductor	Switching Voltage Regulators 2.7V-5.5V 6A MOSFET Sngl Sync Buck Conv Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	19,467On Order On Order Ship Dates Mfr. No: BD9A600MUV-E2 Stock: 0 On Order: 1,467 Expected 05/11/2026 3,000 Expected 17/11/2026 15,000 Expected 30/12/2026 Factory Lead Time: 14 Weeks	Cut Tape £0.943 £0.683 £0.618 £0.558 Reel £0.453 View £0.523 £0.491 £0.476 £0.45 MouseReel Available	Min.: 1 Mult.: 1 : 3,000