In electronic systems ranging from electric vehicles to industrial controllers and IoT devices, reliable power management is critical to performance, efficiency, and longevity. ROHM Semiconductor, a global leader in semiconductor solutions with over 70 years of expertise, delivers a comprehensive portfolio of DC-DC converter ICs engineered for high efficiency, compact size, and robust operation across extreme environments. Covering buck (step-down), boost (step-up), LDO (low-dropout), and automotive-grade converters, ROHM’s products meet the stringent requirements of automotive, industrial, consumer, and IoT applications. To ensure genuine procurement, stable inventory, and professional technical support, ROHM partners with top-tier authorized distributors worldwide, enabling seamless access to these mission-critical power management components.
Core Product Lines & Technical Advantages
ROHM’s DC-DC converter ICs stand out for their tailored performance, energy efficiency, and compliance with industry standards, catering to diverse power management needs:
1. Buck DC-DC Converter ICs (BD9S Series)
The BD9S series is ROHM’s flagship line of high-efficiency buck converters, optimized for space-constrained and power-sensitive designs:
BD9S100MUF-C: 2.5V-18V input, 0.8V-16V output, 3A output current. Features 96% max efficiency, 2.5µA quiescent current, and compact 3mm×3mm QFN package. Ideal for industrial sensors, IoT modules, and consumer electronics.
BD9S400EFJ-E2: Automotive-grade (AEC-Q100 Grade 1) buck converter with 4.5V-40V input, 0.8V-34V output, 4A current. Robust EMC performance and -40℃ to 125℃ operating range, suitable for EV powertrains and in-vehicle infotainment systems.
BD9S700MWV-E2: High-current (7A) buck converter with 4.5V-18V input, 0.6V-13.2V output. Integrates MOSFETs for simplified design, 97% efficiency, and over-temperature/over-current protection—perfect for industrial controllers and server power supplies.
2. LDO Regulators (LD1117, BD71837 Series)
ROHM’s LDO regulators deliver stable low-noise output for sensitive components:
LD1117-3.3: General-purpose LDO with 2.5V-15V input, 3.3V fixed output, 800mA current. Low dropout voltage (1.2V at 800mA) and low noise, widely used in microcontrollers and analog circuits.
BD71837MUF: Ultra-low quiescent current (0.5µA) LDO with 1.8V-6.0V input, 0.8V-5.0V adjustable output. AEC-Q100 qualified, ideal for battery-powered automotive sensors and IoT devices.
3. Boost DC-DC Converter ICs (BD90500 Series)
For applications requiring higher output voltage than input:
BD90500MUV-E2: 2.0V-16V input, 2.5V-20V output, 5A current. 95% max efficiency, integrated Schottky diode, and compact package—suitable for portable devices, LED lighting, and industrial sensors.
4. Automotive-Grade DC-DC Converters (AEC-Q100 Certified)
ROHM’s automotive DC-DC ICs meet the harsh demands of vehicle environments:
BD9P100MUF-C: AEC-Q100 Grade 2 buck converter with 3.0V-18V input, 0.8V-16V output, 1A current. Low EMI and wide temperature range, used in ADAS sensors and automotive ECUs.
BD9P200EFJ-E2: Dual-output automotive buck converter (2A+2A) with 4.5V-40V input. Supports redundant power supply, ideal for chassis control modules and battery management systems (BMS).
Global Authorized Distributors for ROHM DC-DC Converter ICs
To source genuine ROHM DC-DC converter ICs (BD9S series, LDO regulators, automotive-grade models) with official warranty, technical support, and stable inventory, partner with the following authorized distributors. Each specializes in ROHM power management products, offering tailored services for prototype development, small-batch orders, and mass production:
Global Core Authorized Distributors
Arrow Electronics (艾睿电子)
Global coverage for ROHM’s full DC-DC converter portfolio, with dedicated teams for automotive and industrial power management. Provides inventory management, technical consulting, and localized support across Asia-Pacific, Europe, and North America.
Contact:
Global Tech Support - [email protected];
China Office (Shanghai) - 021-58886666 (specialized in ROHM automotive DC-DC ICs).
Official Website: www.arrow.com
Mouser Electronics (贸泽电子)
NPI-focused authorized distributor with immediate stock of ROHM DC-DC converters (BD9S100MUF-C, LD1117-3.3, BD90500MUV-E2). Offers 100% certified genuine products, fast global shipping, and free technical resources (datasheets, evaluation kits).
Contact:
24/7 Global Support - +1 (800) 346-6873;
Hong Kong Office - +852 2803 7700 (supports sample requests for power management testing).
Official Website: www.mouser.com
Avnet (安富利)
Authorized distributor for ROHM automotive and industrial DC-DC ICs, specializing in end-to-end solutions for EV power systems and industrial automation. Offers BOM matching and supply chain optimization.
Contact:
Global Sales - [email protected];
China Office (Shanghai) - 021-23218888
(AEC-Q100 converter compliance support).
Official Website: www.avnet.com
Digi-Key Electronics
Global authorized distributor with a large selection of ROHM DC-DC converter ICs, supporting from prototype to mass production. Provides online inventory query and full manufacturer traceability.
Contact:
Global 24/7 Support - +1 (800) 344-4539;
Europe Office - +44 (191) 482-1777.
Official Website: www.digikey.com
Asia-Pacific Regional Authorized Distributors
WPG Holdings (大联大)
Greater China’s leading distribution group, authorized ROHM partner covering DC-DC converters for automotive, industrial, and consumer electronics. Offers localized technical support and fast delivery.
Contact:
China Office (Taipei) - +886-2-2792-6666;
Shenzhen Branch - 0755-8366-3888.
Official Website: www.wpgholdings.com
Weikeng Technology (威健)
Greater China-based core distributor, with ample stock of ROHM general-purpose and automotive DC-DC ICs. Provides genuine product verification and bulk order benefits.
Contact: Phone - 0755-8282-8888;
Address: Shenzhen, Guangdong.
Official Website: www.weikeng.com
Macnica (Macnica Americas/Asia)
Asia-Pacific-focused authorized distributor, specializing in ROHM power management solutions for industrial and automotive clients. Offers technical design support and stable inventory.
Contact: Japan Office - +81-3-5470-2000; Singapore Office - +65-6333-8333.
Official Website: www.macnica.com
