BD9Cxxx Series DC/DC Bucks

Easily upgrade with pin-compatible BD9Cxxx series DC/DC bucks from Rohm

Image of Rohm Semiconductor's BD9Cxxx series DC/DC BucksROHM’s BD9Cxxx synchronous step-down DC/DC converters integrate low RDS(ON) high side and low side FETs that reduces board space requirements and provide greater than 90% efficiency. The four parts in this family all feature 4.5 V to 18 V inputs and a 0.8 V ±1% accurate resistor-adjustable output voltage.

The BD9C301 (3 A), BD9C401 (4 A), BD9C501 (5 A), and BD9C601 (6 A) are all pin compatible, which provides flexibility for situations where power needs may increase or decrease through the design cycle. To make power design easy, each datasheet includes an application circuit, BOM, and layout consideration for a 12 V input to 3.3 V output. BD9Cxxx evaluation boards are available and can be purchased for further testing.

Features Applications
  • Long time support product for industrial applications (BD9C301)
  • Synchronous single DC/DC converter
  • Over-current protection
  • Thermal shutdown protection
  • Under-voltage lockout protection
  • Short-circuit protection
  • Fixed soft-start function
  • Industrial equipment
  • Broadband network and communication interface
  • Entertainment devices
  • Set-top boxes
  • DVD/Blu-ray disc players/recorders

BD9Cxxx Series DC/DC Bucks

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
BD9C501EFJ-E2 datasheet linkIC REG BUCK ADJ 5A SYNC 8HTSOPBD9C501EFJ-E2IC REG BUCK ADJ 5A SYNC 8HTSOP1821 - Immediate
BD9C501EFJ-E2 product page link
BD9C601EFJ-E2 datasheet linkIC REG BUCK ADJ 6A SYNC 8HTSOPBD9C601EFJ-E2IC REG BUCK ADJ 6A SYNC 8HTSOP2453 - Immediate
BD9C601EFJ-E2 product page link
BD9C401EFJ-E2 datasheet linkIC REG BUCK ADJ 4A SYNC 8HTSOPBD9C401EFJ-E2IC REG BUCK ADJ 4A SYNC 8HTSOP2068 - Immediate
BD9C401EFJ-E2 product page link
BD9C301FJ-E2 datasheet linkIC REG BUCK ADJ 3A SYNC 8SOPJBD9C301FJ-E2IC REG BUCK ADJ 3A SYNC 8SOPJ3991 - Immediate
BD9C301FJ-E2 product page link

BD9Cxxx Evaluation Boards

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
BD9C301FJ-EVK-001 datasheet linkEVAL BOARD BD9C301FJBD9C301FJ-EVK-001EVAL BOARD BD9C301FJ7 - Immediate
BD9C301FJ-EVK-001 product page link
BD9C401EFJ-EVK-001 datasheet linkEVAL BOARD BD9C401EFJBD9C401EFJ-EVK-001EVAL BOARD BD9C401EFJ5 - Immediate
BD9C401EFJ-EVK-001 product page link
BD9C501EFJ-EVK-001 datasheet linkEVAL BOARD BD9C501EFJBD9C501EFJ-EVK-001EVAL BOARD BD9C501EFJ2 - Immediate
BD9C501EFJ-EVK-001 product page link
BD9C601EFJ-EVK-001 datasheet linkEVAL BOARD BD9C601EFJBD9C601EFJ-EVK-001EVAL BOARD BD9C601EFJ5 - Immediate
BD9C601EFJ-EVK-001 product page link
BD9C601EFJEVK-101 datasheet linkBOARD EVAL FOR BD9C601BD9C601EFJEVK-101BOARD EVAL FOR BD9C60137 - Immediate
BD9C601EFJEVK-101 product page link
Published: 2015-07-06