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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 BUCK SWITCHING REG IC

BD9G201UEFJ-ME2
ROHM Semiconductor
1: ¥385.4
498In Stock

Mfr. Part #
BD9G201UEFJ-ME2

Mouser Part #
755-BD9G201UEFJ-ME2

ROHM Semiconductor

Switching Voltage Regulators BUCK SWITCHING REG IC

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Datasheet

498In Stock

Cut Tape

¥385.4

¥285.7

¥260.8

¥234.2

Reel

¥197.7

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Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Multi Output

BD93291EFJ-E2
ROHM Semiconductor
1: ¥189.4
4,236In Stock

Mfr. Part #
BD93291EFJ-E2

Mouser Part #
755-BD93291EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Multi Output

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Datasheet

4,236In Stock

Cut Tape

¥189.4

¥139

¥125.6

¥110.8

Reel

¥92.4

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Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD95861MUV-E2
ROHM Semiconductor
1: ¥280.7
9,309In Stock

Mfr. Part #
BD95861MUV-E2

Mouser Part #
755-BD95861MUV-E2

ROHM Semiconductor

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

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Datasheet

9,309In Stock

Cut Tape

¥280.7

¥206

¥187.7

¥167.8

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Reel

¥139.9

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators 900 kHz SINGLE CHAN STEP DOWN SWITCHING

BD9870FPS-E2
ROHM Semiconductor
1: ¥315.6
2,507In Stock
2,000Expected 10/6/2026

Mfr. Part #
BD9870FPS-E2

Mouser Part #
755-BD9870FPS-E2

ROHM Semiconductor

Switching Voltage Regulators 900 kHz SINGLE CHAN STEP DOWN SWITCHING

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Datasheet

2,507In Stock

2,000Expected 10/6/2026

Cut Tape

¥315.6

¥232.5

¥212.6

¥189.4

Reel

¥164.4

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Mult.: 1

: 2,000

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

BD9B301MUV-LBE2
ROHM Semiconductor
1: ¥553.1
825In 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

825In Stock

Cut Tape

¥553.1

¥415.3

¥382

¥343.8

Reel

¥292.3

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Mult.: 1

: 3,000

Switching Voltage Regulators 4.5-18Vin,3A MOSFET DC/DC Converter

BD9C301FJ-E2
ROHM Semiconductor
1: ¥244.2
7,042In Stock

Mfr. Part #
BD9C301FJ-E2

Mouser Part #
755-BD9C301FJ-E2

ROHM Semiconductor

Switching Voltage Regulators 4.5-18Vin,3A MOSFET DC/DC Converter

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Datasheet

7,042In Stock

Cut Tape

¥244.2

¥179.4

¥161.9

¥143.7

Reel

¥117.9

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Mult.: 1

: 2,500

Switching Voltage Regulators RECT 650V 15A SM SCHOTTKY

BD9C601EFJ-E2
ROHM Semiconductor
1: ¥385.4
1,450In Stock

Mfr. Part #
BD9C601EFJ-E2

Mouser Part #
755-BD9C601EFJ-E2

ROHM Semiconductor

Switching Voltage Regulators RECT 650V 15A SM SCHOTTKY

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Datasheet

1,450In Stock

Cut Tape

¥385.4

¥285.7

¥259.1

¥234.2

Reel

¥197.7

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MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9D320EFJ-E2
ROHM Semiconductor
1: ¥111.3
17,085In Stock

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

17,085In Stock

Cut Tape

¥111.3

¥79.2

¥71.1

¥62.1

Reel

¥50.8

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Mult.: 1

: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9D321EFJ-E2
ROHM Semiconductor
1: ¥114.6
7,580In 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

7,580In Stock

Cut Tape

¥114.6

¥80.9

¥72.8

¥63.6

Reel

¥51.3

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MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators SD Switching Reg

BD9G101G-TR
ROHM Semiconductor
1: ¥260.8
12,881In Stock

Mfr. Part #
BD9G101G-TR

Mouser Part #
755-BD9G101G-TR

ROHM Semiconductor

Switching Voltage Regulators SD Switching Reg

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Datasheet

12,881In Stock

Cut Tape

¥260.8

¥191

¥172.7

¥153.3

Reel

¥127.9

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Min.: 1
Mult.: 1

: 3,000

Switching Voltage Regulators 1ch Buck Converter Integrated FET

BD9G341AEFJ-E2
ROHM Semiconductor
1: ¥702.6
3,878In Stock
7,470On Order

Mfr. Part #
BD9G341AEFJ-E2

Mouser Part #
755-BD9G341AEFJ-E2

ROHM Semiconductor

Switching Voltage Regulators 1ch Buck Converter Integrated FET

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Datasheet

3,878In Stock

7,470On Order

Cut Tape

¥702.6

¥531.5

¥488.3

¥441.8

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Reel

¥382

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

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

View

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Min.: 1
Mult.: 1

: 3,000

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9326EFJ-E2
ROHM Semiconductor
1: ¥264.1
1,315In Stock

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

1,315In Stock

Cut Tape

¥264.1

¥194.3

¥176.1

¥156

Reel

¥130.9

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MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Switching Controllers 60V Synchronous Step-down Regulator

BD9611MUV-E2
ROHM Semiconductor
1: ¥446.8
1,144In 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

1,144In Stock

2,500Expected 1/26/2027

Cut Tape

¥446.8

¥327.2

¥300.6

¥247.5

Reel

¥179.4

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MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET

BD9873CP-V5E2
ROHM Semiconductor
1: ¥297.3
260In Stock
500Expected 9/22/2026

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 9/22/2026

Cut Tape

¥297.3

¥219.3

¥199.3

¥177.7

Reel

¥163.6

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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

View

Min.: 1
Mult.: 1

: 500

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

BD9A600MUV-E2
ROHM Semiconductor
1: ¥194.3
980In 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

980In Stock

21,000On Order

Cut Tape

¥194.3

¥140.2

¥126.7

¥112

Reel

¥94.7

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

BD9E100FJ-LBGH2
ROHM Semiconductor
1: ¥588
110In Stock
250Expected 12/2/2026

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

110In Stock

250Expected 12/2/2026

Cut Tape

¥588

¥443.5

¥406.9

¥367.1

Reel

¥345.5

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MouseReel Available

Min.: 1
Mult.: 1

: 250

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

BD9E101FJ-LBGH2
ROHM Semiconductor
1: ¥588
139In Stock

Mfr. Part #
BD9E101FJ-LBGH2

Mouser Part #
755-BD9E101FJ-LBGH2

ROHM Semiconductor

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

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Datasheet

139In Stock

Cut Tape

¥588

¥443.5

¥406.9

¥367.1

Reel

¥343.8

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC

BD9E104FJ-E2
ROHM Semiconductor
1: ¥179.4
76In Stock
2,500Expected 10/29/2026

Mfr. Part #
BD9E104FJ-E2

Mouser Part #
755-BD9E104FJ-E2

ROHM Semiconductor

Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC

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Datasheet

76In Stock

2,500Expected 10/29/2026

Cut Tape

¥179.4

¥128.9

¥116.4

¥102.6

Reel

¥85.4

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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: ¥187.7
2,346In 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

2,346In Stock

17,500On Order

Cut Tape

¥187.7

¥135.2

¥122.2

¥107.8

View

Reel

¥86.7

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: ¥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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Min.: 1
Mult.: 1

: 2,500

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

BD9306AFVM-TR
ROHM Semiconductor
1: ¥270.7
703In 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

703In Stock

Cut Tape

¥270.7

¥199.3

¥181

¥159.8

Reel

¥133.7

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

BD9E303EFJ-LBH2
ROHM Semiconductor
1: ¥775.7
273In Stock
NRND

Mfr. Part #
BD9E303EFJ-LBH2

Mouser Part #
755-BD9E303EFJ-LBH2

NRND

ROHM Semiconductor

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

Learn More

Datasheet

273In Stock

Cut Tape

¥775.7

¥589.7

¥543.1

¥491.7

Reel

¥465.1

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MouseReel Available

Min.: 1
Mult.: 1

: 250

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

Learn More

Datasheet

1,005In Stock

Cut Tape

¥214.3

¥154.5

¥139.9

¥123.6

Reel

¥103.1

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Min.: 1
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: 2,500

BD9x Integrated MOSFET DC-DC Buck Converters

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