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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Qty. RoHS Mounting Style
Package/Case
Output Voltage
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
8.109In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT VQFNV4040-EP-24 5.5 V
ROHM Semiconductor Switching Voltage Regulators 900 kHz SINGLE CHAN STEP DOWN SWITCHING
Datasheet
2.457In Stock
2.000Expected 9/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD/SMT TO-252-5 1 V to 26 V
ROHM Semiconductor Switching Voltage Regulators 2.7V To 5.5 MOSFET DC/DC Conv
Datasheet
822In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT VQFNV3030-EP-16 800 mV to 4.4 V
ROHM Semiconductor Switching Voltage Regulators 4.5-18Vin,3A MOSFET DC/DC Converter
Datasheet
7.037In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT SOP-J-8 800 mV to 12.6 V
ROHM Semiconductor Switching Voltage Regulators RECT 650V 15A SM SCHOTTKY
Datasheet
1.450In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 800 mV to 12.6 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
7.380In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 765 mV to 7 V
ROHM Semiconductor Switching Voltage Regulators SD Switching Reg
Datasheet
12.429In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT SSOP-6 1 V to 29.4 V
ROHM Semiconductor Switching Voltage Regulators Buck Conv Intgtd FET 0.5A 1ch; 6V-24V
Datasheet
Product Comments
16.183In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT SSOP-6 750 mV to 33.6 V
ROHM Semiconductor Switching Voltage Regulators Power Supply IC T/R
Datasheet
2.994In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT MSOP-8 1 V to 3.3 V
ROHM Semiconductor Switching Voltage Regulators 4.2-18V 100-800kHz 1 Chan Step-Up
Datasheet
691In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT MSOP-8
ROHM Semiconductor Switching Voltage Regulators 7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter
Datasheet
250In Stock
Min.: 1
Mult.: 1
: 250

SMD/SMT HTSOP-J8 1 V to 25.2 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
1.315In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 18 V
ROHM Semiconductor Switching Controllers 60V Synchronous Step-down Regulator
Datasheet
1.134In Stock
2.500Expected 1/26/2027
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT VQFNV4040-EP-20 1 V to 44.8 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
260In Stock
500Expected 10/8/2026
Min.: 1
Mult.: 1
: 500

Through Hole TO-220-5 1 V to 28 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
387In Stock
Min.: 1
Mult.: 1
: 500

Through Hole TO-220-5 1 V to 28 V
ROHM Semiconductor Switching Voltage Regulators 2.7V-5.5V 6A MOSFET Sngl Sync Buck Conv
Datasheet
980In Stock
21.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT VQFNV3030-EP-16 800 mV to 3.85 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
2.296In Stock
42.500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 765 mV to 7 V
ROHM Semiconductor Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET
Datasheet
100In Stock
250Expected 12/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 250

SMD/SMT SOP-J-8 1 V to 25.2 V
ROHM Semiconductor Switching Voltage Regulators Ind Buck Sync 7-36V w/ Integrated FET
Datasheet
139In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

SMD/SMT SOP-J-8 1 V to 25.2 V
ROHM Semiconductor Switching Voltage Regulators 7-26V; 1A MOSFET S. Sync Buck DC/DC
Datasheet
38In Stock
2.500Expected 10/29/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT SOP-J-8 1 V to 13 V
ROHM Semiconductor Switching Voltage Regulators 7-28V 3A Int MOSFET Buck DC/DC Conv IC
Datasheet
2.086In Stock
17.500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 1 V to 19.6 V
ROHM Semiconductor Switching Voltage Regulators High Eff. Stepdown Sw Reg 2A 4.5-13.2V
Datasheet
52In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT VQFNV4040-EP-20 2.5 V to 6 V
ROHM Semiconductor Switching Voltage Regulators IC Pwr Swtch Reg Integrated FET
Datasheet
1.005In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 1 V to 9.8 V
ROHM Semiconductor Switching Voltage Regulators 7.0V to 36V Input, 3.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter
Datasheet
228In Stock
Min.: 1
Mult.: 1
: 2.500

SMD/SMT HTSOP-J8 1 V to 28.8 V
ROHM Semiconductor Switching Voltage Regulators 3.3V Output Voltage
Datasheet
356In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

SMD/SMT MSOP-8 3.3 V