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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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Part #

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9D320EFJ-E2
ROHM Semiconductor
1: ¥127.9
6,935In Stock
42,500On Order

Mfr. Part #
BD9D320EFJ-E2

Mouser Part #
755-BD9D320EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

6,935In Stock

42,500On Order

Cut Tape

¥127.9

¥89.9

¥80.6

¥70.4

Reel

¥57.5

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: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9D321EFJ-E2
ROHM Semiconductor
1: ¥114.6
7,048In Stock

Mfr. Part #
BD9D321EFJ-E2

Mouser Part #
755-BD9D321EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

7,048In Stock

Cut Tape

¥114.6

¥80.9

¥72.8

¥63.6

Reel

¥51.3

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: 2,500

Switching Voltage Regulators 7-36Vin,1A MOSFET DC/DC Converter

BD9E100FJ-LBGE2
ROHM Semiconductor
1: ¥654.4
2,997In Stock

Mfr. Part #
BD9E100FJ-LBGE2

Mouser Part #
755-BD9E100FJ-LBGE2

ROHM Semiconductor

Switching Voltage Regulators 7-36Vin,1A MOSFET DC/DC Converter

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Datasheet

2,997In Stock

Cut Tape

¥654.4

¥493.3

¥453.5

¥408.6

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¥360.4

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: 2,500

Switching Voltage Regulators SD Switching Reg

BD9G101G-TR
ROHM Semiconductor
1: ¥260.8
4,446In Stock
12,000Expected 2/11/2027

Mfr. Part #
BD9G101G-TR

Mouser Part #
755-BD9G101G-TR

ROHM Semiconductor

Switching Voltage Regulators SD Switching Reg

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Datasheet

4,446In Stock

12,000Expected 2/11/2027

Cut Tape

¥260.8

¥191

¥172.7

¥153.3

Reel

¥128.2

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: 3,000

Switching Voltage Regulators Buck Conv Intgtd FET 0.5A 1ch; 6V-24V

BD9G102G-LBTR
ROHM Semiconductor
1: ¥260.8
13,373In Stock

Mfr. Part #
BD9G102G-LBTR

Mouser Part #
755-BD9G102G-LBTR

ROHM Semiconductor

Switching Voltage Regulators Buck Conv Intgtd FET 0.5A 1ch; 6V-24V

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Datasheet

13,373In Stock

Cut Tape

¥260.8

¥192.7

¥174.4

¥154.1

Reel

¥128.9

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: 3,000

Switching Voltage Regulators Power Supply IC T/R

BD9161FVM-LBTR
ROHM Semiconductor
1: ¥337.2
2,994In Stock
NRND

Mfr. Part #
BD9161FVM-LBTR

Mouser Part #
755-BD9161FVM-LBTR

NRND

ROHM Semiconductor

Switching Voltage Regulators Power Supply IC T/R

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Datasheet

2,994In Stock

Cut Tape

¥337.2

¥332.2

¥304

¥285.7

Reel

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: 3,000

Switching Voltage Regulators 4.2-18V 100-800kHz 1 Chan Step-Up

BD9306AFVM-TR
ROHM Semiconductor
1: ¥270.7
691In Stock

Mfr. Part #
BD9306AFVM-TR

Mouser Part #
755-BD9306AFVM-TR

ROHM Semiconductor

Switching Voltage Regulators 4.2-18V 100-800kHz 1 Chan Step-Up

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Datasheet

691In Stock

Cut Tape

¥270.7

¥199.3

¥181

¥159.8

Reel

¥137.5

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: 3,000

Switching Voltage Regulators 7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

BD9E300UEFJ-LBH2
ROHM Semiconductor
1: ¥840.5
250In Stock

Mfr. Part #
BD9E300UEFJ-LBH2

Mouser Part #
755-BD9E300UEFJ-LBH2

ROHM Semiconductor

Switching Voltage Regulators 7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

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Datasheet

250In Stock

Cut Tape

¥840.5

¥639.5

¥589.7

¥534.8

Reel

¥506.6

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: 250

Switching Voltage Regulators 7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

BD9E301UEFJ-LBH2
ROHM Semiconductor
1: ¥840.5
250In Stock

Mfr. Part #
BD9E301UEFJ-LBH2

Mouser Part #
755-BD9E301UEFJ-LBH2

ROHM Semiconductor

Switching Voltage Regulators 7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

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Datasheet

250In Stock

Cut Tape

¥840.5

¥639.5

¥589.7

¥534.8

Reel

¥506.6

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Min.: 1
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: 250

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9326EFJ-E2
ROHM Semiconductor
1: ¥325.6
711In Stock
2,500Expected 1/6/2027

Mfr. Part #
BD9326EFJ-E2

Mouser Part #
755-BD9326EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

711In Stock

2,500Expected 1/6/2027

Cut Tape

¥325.6

¥239.2

¥217.6

¥192.7

Reel

¥162.3

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: 2,500

Switching Controllers 60V Synchronous Step-down Regulator

BD9611MUV-E2
ROHM Semiconductor
1: ¥385.4
1,112In Stock
2,500Expected 1/26/2027

Mfr. Part #
BD9611MUV-E2

Mouser Part #
755-BD9611MUV-E2

ROHM Semiconductor

Switching Controllers 60V Synchronous Step-down Regulator

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Datasheet

1,112In Stock

2,500Expected 1/26/2027

Cut Tape

¥385.4

¥285.7

¥260.8

¥234.2

Reel

¥197.7

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: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9873CP-V5E2
ROHM Semiconductor
1: ¥566.4
260In Stock
500Expected 10/9/2026

Mfr. Part #
BD9873CP-V5E2

Mouser Part #
755-BD9873CP-V5E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

260In Stock

500Expected 10/9/2026

Cut Tape

¥566.4

¥416.9

¥378.7

¥337.2

Reel

¥310.6

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Min.: 1
Mult.: 1

: 500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9874CP-V5E2
ROHM Semiconductor
1: ¥335.5
387In Stock

Mfr. Part #
BD9874CP-V5E2

Mouser Part #
755-BD9874CP-V5E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

387In Stock

Cut Tape

¥335.5

¥247.5

¥225.9

¥201

Reel

¥179.4

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Mult.: 1

: 500

Switching Voltage Regulators 2.7V-5.5V 6A MOSFET Sngl Sync Buck Conv

BD9A600MUV-E2
ROHM Semiconductor
1: ¥209.3
480In Stock
21,000On Order

Mfr. Part #
BD9A600MUV-E2

Mouser Part #
755-BD9A600MUV-E2

ROHM Semiconductor

Switching Voltage Regulators 2.7V-5.5V 6A MOSFET Sngl Sync Buck Conv

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Datasheet

480In Stock

21,000On Order

Cut Tape

¥209.3

¥151.6

¥137.2

¥121.3

Reel

¥101.2

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: 3,000

Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv

BD9B301MUV-LBE2
ROHM Semiconductor
1: ¥576.4
379In Stock

Mfr. Part #
BD9B301MUV-LBE2

Mouser Part #
755-BD9B301MUV-LBE2

ROHM Semiconductor

Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv

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Datasheet

379In Stock

Cut Tape

¥576.4

¥431.9

¥395.3

¥355.5

Reel

¥292.3

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: 3,000

Switching Voltage Regulators 2.7-5.5v DC/DC Conv w/ 5A MOSFET

BD9B500MUV-E2
ROHM Semiconductor
1: ¥210.9
577In Stock

Mfr. Part #
BD9B500MUV-E2

Mouser Part #
755-BD9B500MUV-E2

ROHM Semiconductor

Switching Voltage Regulators 2.7-5.5v DC/DC Conv w/ 5A MOSFET

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Datasheet

577In Stock

Cut Tape

¥210.9

¥153.6

¥139

¥122.7

Reel

¥102.6

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Mult.: 1

: 3,000

Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET

BD9E100FJ-LBGH2
ROHM Semiconductor
1: ¥588
100In Stock
250Expected 11/17/2026

Mfr. Part #
BD9E100FJ-LBGH2

Mouser Part #
755-BD9E100FJ-LBGH2

ROHM Semiconductor

Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET

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Datasheet

100In Stock

250Expected 11/17/2026

Cut Tape

¥588

¥443.5

¥406.9

¥367.1

Reel

¥345.5

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Mult.: 1

: 250

Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET

BD9E101FJ-LBGH2
ROHM Semiconductor
1: ¥588
39In Stock

Mfr. Part #
BD9E101FJ-LBGH2

Mouser Part #
755-BD9E101FJ-LBGH2

ROHM Semiconductor

Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET

Learn More

Datasheet

39In Stock

Cut Tape

¥588

¥443.5

¥406.9

¥367.1

Reel

¥343.8

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Min.: 1
Mult.: 1

: 250

Switching Voltage Regulators 7-36Vin,2.5A MOSFET DC/DC Converter

BD9E301EFJ-LBE2
ROHM Semiconductor
1: ¥750.8
307In Stock

Mfr. Part #
BD9E301EFJ-LBE2

Mouser Part #
755-BD9E301EFJ-LBE2

ROHM Semiconductor

Switching Voltage Regulators 7-36Vin,2.5A MOSFET DC/DC Converter

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Datasheet

307In Stock

Cut Tape

¥750.8

¥569.7

¥524.9

¥475

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¥420.2

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: 2,500

Switching Voltage Regulators 7-28V 3A Int MOSFET Buck DC/DC Conv IC

BD9E302EFJ-E2
ROHM Semiconductor
1: ¥192.7
1,338In Stock
17,500On Order

Mfr. Part #
BD9E302EFJ-E2

Mouser Part #
755-BD9E302EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators 7-28V 3A Int MOSFET Buck DC/DC Conv IC

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Datasheet

1,338In Stock

17,500On Order

Cut Tape

¥192.7

¥137.9

¥124.1

¥109.1

Reel

¥87.5

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Min.: 1
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: 2,500

Switching Voltage Regulators High Eff. Stepdown Sw Reg 2A 4.5-13.2V

BD9141MUV-E2
ROHM Semiconductor
1: ¥664.4
52In Stock

Mfr. Part #
BD9141MUV-E2

Mouser Part #
755-BD9141MUV-E2

ROHM Semiconductor

Switching Voltage Regulators High Eff. Stepdown Sw Reg 2A 4.5-13.2V

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Datasheet

52In Stock

Cut Tape

¥664.4

¥496.6

¥453.5

¥406.9

Reel

¥352.1

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: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9859EFJ-E2
ROHM Semiconductor
1: ¥214.3
1,005In Stock

Mfr. Part #
BD9859EFJ-E2

Mouser Part #
755-BD9859EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

1,005In Stock

Cut Tape

¥214.3

¥154.5

¥139.9

¥123.6

Reel

¥103.1

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: 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: ¥403.6
228In Stock
NRND

Mfr. Part #
BD9E303UEFJ-LBE2

Mouser Part #
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

¥403.6

¥299

¥274.1

¥245.8

Reel

¥207.6

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Mult.: 1

: 2,500

Switching Voltage Regulators 3.3V Output Voltage

BD9109FVM-TR
ROHM Semiconductor
1: ¥365.4
356In Stock
NRND

Mfr. Part #
BD9109FVM-TR

Mouser Part #
755-BD9109FVM-TR

NRND

ROHM Semiconductor

Switching Voltage Regulators 3.3V Output Voltage

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Datasheet

356In Stock

Cut Tape

¥365.4

¥275.7

¥252.5

¥225.9

Reel

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: 3,000

Switching Voltage Regulators 1ch Buck Cnvrtr 4.5-42V; HTSOP-J8ES

BD9G201EFJ-LBE2
ROHM Semiconductor
1: ¥410.3
392In Stock
NRND

Mfr. Part #
BD9G201EFJ-LBE2

Mouser Part #
755-BD9G201EFJ-LBE2

NRND

ROHM Semiconductor

Switching Voltage Regulators 1ch Buck Cnvrtr 4.5-42V; HTSOP-J8ES

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Datasheet

392In Stock

Cut Tape

¥410.3

¥305.6

¥279

¥249.2

Reel

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: 2,500

BD9x Integrated MOSFET DC-DC Buck Converters

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