BD9S Series Automotive Buck DC-DC Converters

ROHM Semiconductor BD9S Automotive Buck DC-DC Converters provide high-reliability and low power consumption in a compact form factor with a temperature range of -40°C to +125°C. The BD9S DC-DC Converters feature current-mode control, ensuring fast response to load transients. A fixed 2.2MHz switching frequency prevents interference in the AM Band. This high frequency also allows the use of smaller external components, contributing to a higher degree of miniaturization and power savings. The BD9S Converters also include an enable function to adjust the startup time and a built-in output (Power Good function) indicating correct output voltage has been achieved. These AEC-Q100 qualified (Grade 1) devices support output currents from 0.6A to 4.0A for design flexibility. 

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Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
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Output Voltage
Output Current
Number of Outputs
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Minimum Operating Temperature
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ROHM Semiconductor Switching Voltage Regulators Sync Buck DC/DC Conv 2A MOSFET; 2.7-5.5V
Datasheet
Product Comments
7,795In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT VQFNFV3030-EP-16 Buck 800 mV to 4.4 V 2 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 1.8V(Typ), 1.0A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
Product Comments
2,935In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

SMD/SMT VSON-8 Buck 1.8 V 1 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators Sync Buck DC/DC Conv 4A MOSFET; 2.7-5.5V
Datasheet
Product Comments
2,620In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT VQFNFV3030-EP-16 Buck 800 mV to 4.4 V 4 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 0.8V ~VIN, 1.0A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
3,600In Stock
Min.: 1
Mult.: 1
Reel: 4,000
SMD/SMT VSON008X2020-7 Buck 800 mV to 5.5 V 1 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 0.8V ~VIN, 2.0A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
3,040In Stock
Min.: 1
Mult.: 1
Reel: 4,000
SMD/SMT VSON008X2020-8 Buck 800 mV to 5.5 V 2 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 0.8V ~VIN, 0.6A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
Product Comments
3,082In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

SMD/SMT VSON-8 Buck 800 mV to 5.5 V 600 mA 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 0.8V ~VIN, 1.0A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
Product Comments
3,563In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

SMD/SMT VSON-8 Buck 800 mV to 5.5 V 1 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators Sync Buck DC/DC Conv 3A MOSFET; 2.7-5.5V
Datasheet
Product Comments
3,965In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT VQFNFV3030-EP-16 Buck 800 mV to 4.4 V 3 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Voltage Regulators IC, PMIC, Buck DC/DC Converter, 2.7V~5.5V Input, 1.2V(Typ), 1.0A Output, 2.2MHz Op Frequency, -40?~+125?
Datasheet
Product Comments
Non-Stocked Lead-Time 13 Weeks
Min.: 4,000
Mult.: 4,000
Reel: 4,000

SMD/SMT VSON-8 Buck 1.2 V 1 A 1 Output 2.2 MHz - 40 C + 125 C AEC-Q100 Reel