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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 (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Switching Voltage Regulators Power Supply IC T/R BD9161FVM-LBTR ROHM Semiconductor 1: 1,75 € 2 994In Stock NRND	Mfr. Part No. BD9161FVM-LBTR Mouser Part No 755-BD9161FVM-LBTR NRND	ROHM Semiconductor	Switching Voltage Regulators Power Supply IC T/R Learn More about ROHM Semiconductor rohm bd9 buck converter	Datasheet	2 994In Stock	Cut Tape 1,75 € 1,72 € 1,57 € 1,48 € Reel View 1,43 € 1,37 € 0,894 € 0,86 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9326EFJ-E2 ROHM Semiconductor 1: 1,69 € 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 1,69 € 1,24 € 1,13 € 0,998 € Reel 0,84 € View 0,937 € 0,903 € 0,837 € 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: 1,07 € 225In Stock 10 000On 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	225In Stock 10 000On Order On Order Ship Dates Mfr. No: BD900M5WEFJ-CE2 Stock: 225 Can Dispatch Immediately On Order: 2 500 Expected 17/02/2027 7 500 Expected 22/02/2027 Factory Lead Time: 18 Weeks	Cut Tape 1,07 € 0,77 € 0,697 € 0,629 € Reel 0,514 € View 0,589 € 0,566 € 0,555 € 0,502 €	Min.: 1 Mult.: 1 : 2 500
Switching Controllers 60V Synchronous Step-down Regulator BD9611MUV-E2 ROHM Semiconductor 1: 2,00 € 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 2,00 € 1,48 € 1,35 € 1,21 € Reel 1,02 € View 1,14 € 1,11 € 1,08 € 0,972 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9873CP-V5E2 ROHM Semiconductor 1: 2,93 € 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 2,93 € 2,16 € 1,96 € 1,75 € Reel 1,61 € View 1,65 € 1,57 € 1,47 € 1,44 €	Min.: 1 Mult.: 1 : 500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9874CP-V5E2 ROHM Semiconductor 1: 2,15 € 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 2,15 € 1,60 € 1,46 € 1,32 € Reel 1,19 € View 1,24 € 1,14 € 1,13 €	Min.: 1 Mult.: 1 : 500
Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv BD9B301MUV-LBE2 ROHM Semiconductor 1: 2,98 € 379In Stock	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	379In Stock	Cut Tape 2,98 € 2,24 € 2,05 € 1,84 € View Reel 1,55 € 1,74 € 1,70 € 1,62 € 1,55 € 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: 1,09 € 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 1,09 € 0,796 € 0,72 € 0,636 € Reel 0,531 € View 0,596 € 0,572 € 0,546 € 0,524 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9D320EFJ-E2 ROHM Semiconductor 1: 0,662 € 1 750In Stock 37 500On 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 37 500On Order On Order Ship Dates Mfr. No: BD9D320EFJ-E2 Stock: 1 750 Can Dispatch Immediately On Order: 10 000 Expected 19/11/2026 27 500 Expected 26/11/2026 Factory Lead Time: 14 Weeks	Cut Tape 0,662 € 0,465 € 0,417 € 0,365 € Reel 0,298 € View 0,339 € 0,324 € 0,311 € 0,29 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET BD9E100FJ-LBGH2 ROHM Semiconductor 1: 3,04 € 100In Stock 250Expected 17/11/2026	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 17/11/2026	Cut Tape 3,04 € 2,30 € 2,11 € 1,90 € Reel 1,79 € View 1,70 € 1,65 € 1,63 € MouseReel Available	Min.: 1 Mult.: 1 : 250
Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET BD9E101FJ-LBGH2 ROHM Semiconductor 1: 3,04 € 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 3,04 € 2,30 € 2,11 € 1,90 € Reel 1,79 € View 1,76 € 1,71 € 1,69 € 1,67 € MouseReel Available	Min.: 1 Mult.: 1 : 250
Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC BD9E104FJ-E2 ROHM Semiconductor 1: 0,98 € 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 0,98 € 0,707 € 0,639 € 0,549 € View Reel 0,449 € 0,513 € 0,492 € 0,477 € 0,449 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators 7-36Vin,2.5A MOSFET DC/DC Converter BD9E301EFJ-LBE2 ROHM Semiconductor 1: 3,89 € 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 3,89 € 2,95 € 2,72 € 2,46 € View Reel 2,18 € 2,33 € 2,25 € 2,18 € 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: 1,01 € 85In Stock 17 500On 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	85In Stock 17 500On Order On Order Ship Dates Mfr. No: BD9E302EFJ-E2 Stock: 85 Can Dispatch Immediately On Order: 7 500 Expected 03/12/2026 10 000 Expected 28/12/2026 Factory Lead Time: 14 Weeks	Cut Tape 1,01 € 0,726 € 0,655 € 0,577 € View Reel 0,458 € 0,54 € 0,518 € 0,503 € 0,458 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators SD Switching Reg BD9G101G-TR ROHM Semiconductor 1: 1,35 € 482In 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	482In Stock 24 000On Order On Order Ship Dates Mfr. No: BD9G101G-TR Stock: 482 Can Dispatch Immediately On Order: 12 000 Expected 14/12/2026 12 000 Expected 11/02/2027 Factory Lead Time: 15 Weeks	Cut Tape 1,35 € 0,989 € 0,894 € 0,794 € Reel 0,664 € View 0,746 € 0,717 € 0,711 € 0,65 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Switching Voltage Regulators 1ch Buck Converter Integrated FET BD9G341AEFJ-E2 ROHM Semiconductor 1: 3,68 € 324In 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	324In Stock 15 000Expected 29/01/2027	Cut Tape 3,68 € 2,78 € 2,55 € 2,30 € View Reel 2,03 € 2,18 € 2,17 € 2,12 € 2,03 € 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: 3,44 € 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 3,44 € 2,57 € 2,35 € 2,11 € Reel 1,82 € View 2,00 € 1,94 € 1,85 € 1,81 € 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: 1,40 € 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 1,40 € 1,03 € 0,937 € 0,827 € Reel 0,712 € View 0,778 € 0,748 € 0,742 € 0,697 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9859EFJ-E2 ROHM Semiconductor 1: 1,11 € 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 1,11 € 0,80 € 0,724 € 0,64 € Reel 0,534 € View 0,599 € 0,575 € 0,55 € 0,521 € 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: 2,09 € 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 2,09 € 1,55 € 1,42 € 1,27 € Reel 1,08 € View 1,20 € 1,17 € 1,14 € 1,04 €	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators 3.3V Output Voltage BD9109FVM-TR ROHM Semiconductor 1: 1,89 € 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 1,89 € 1,43 € 1,31 € 1,17 € Reel View 1,10 € 1,07 € 1,03 € 0,955 € 0,946 € 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: 1,54 € 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 1,54 € 1,13 € 1,02 € 0,912 € Reel View 0,86 € 0,829 € 0,825 € 0,774 € 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Switching Voltage Regulators 1ch Buck Cnvrtr 4.5-42V; HTSOP-J8ES BD9G201EFJ-LBE2 ROHM Semiconductor 1: 2,12 € 392In 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	392In Stock	Cut Tape 2,12 € 1,58 € 1,44 € 1,29 € Reel View 1,22 € 1,19 € 1,16 € 1,09 € 1,08 € 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: 1,09 € 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 1,09 € 0,785 € 0,711 € 0,629 € Reel 0,514 € View 0,589 € 0,566 € 0,555 € 0,502 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET BD9A300MUV-E2 ROHM Semiconductor 1: 0,92 € 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 0,92 € 0,656 € 0,591 € 0,519 € Reel 0,43 € View 0,486 € 0,465 € 0,451 € 0,421 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000