- Illumination and Lightning Products
- Power Products
- Audio-rerated Products
- Mobile Phones/Portable Equipment Products
- Products for LCDs
- Power Management Products
- PC/Peripheral Device Products
1ch Synchronous Rectification Step-up Switching Regulators 
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Flexible Power Supplies |
Step-up/-down Automatic Switching DC/DC Converter ICs |
MOSFET Controller ICs for Load Switches |
3-phase Fan Motor Drivers for Notebook PCs |
Thermostat Output Temperature Sensor IC |
H-bridge Drivers for DC Brush Motors |
Stepping Motor Drivers |
Class D Speaker Amplifiers |
Class D Headphone Amplifiers | Ultra-low Saturation Linear Power Supply Controllers for PCs | Hall ICs (For magnetic open/close switches)
|
Flexible Power Supplies |
Step-up/-down Automatic Switching DC/DC Converter ICs |
MOSFET Controller ICs for Load Switches |
3-phase Fan Motor Drivers for Notebook PCs |
Thermostat Output Temperature Sensor IC |
H-bridge Drivers for DC Brush Motors |
Stepping Motor Drivers |
Class D Speaker Amplifiers | Class D Headphone Amplifiers | Ultra-low Saturation Linear Power Supply Controllers for PCs | Hall ICs (For magnetic open/close switches)
The BD9641NUV 1ch synchronous rectification step-up switching regulator integrates a FET and is compatible with single-cell li-ion voltages (2.5V-5.5V), making it ideal for compact portable equipment. In addition, synchronous rectification results in an industry-leading 96% efficiency at a relatively high load current (approx. 150mA), while the compact package, combined with simpler peripheral circuitry, contribute to smaller power supply systems.
ROHM's lineup of high performance LDO regulators and DC/DC converters integrate a variety of channels on a single chip. A unique disperse power supply element design saves space while making it possible to use only the number of power supplies required for better efficiency. The BH6172GU utilizes original circuit technology for safe, high efficiency driving across all load regions (i.e. 85% efficiency at Io=150mA).
ROHM boost/buck automatic switching DC/DC converters and controllers feature low-loss operation. The BD8301MUV integrates a low ON-resistance 100mΩ MOSFET at the output stage. Output loss is suppressed for greater efficiency. In addition, the products provide multiple high-current Vcc and Ground terminals, reducing wiring resistance for lower power loss.
The BD2270HFV controller IC integrates a low ON-resistance NMOSFET, making it easy to drive load switches. Additional features include a charge pump circuit and comparator circuit with hysteresis in the discharge and control blocks. The monolithic design utilizes less space, simplifies design, and improves energy efficiency over conventional discrete configutations.
The BH6713NUV features a proprietary circuit design and utilizes Bi-CMOS processes, eliminating the need for external components normally required for the boost circuit in 3-phase fan motor drivers, such as the 4 capacitors. In addition, the ultra-compact package (VSON010V3030: 3.0mmx3.0mm) reduces both mounting area as well as pin count, contributing to smaller devices. In terms of efficiency, ROHM's original PWM control system results in less noise and vibration than current software switching methods.
BDJ□□□□1HFV Series
ROHM thermostat output temperature sensor ICs are available in the ultra-compact HVSOF5 package (1.6× 1.6mm t=0.6mm). Open Drain Active High operation ensures a temperature detection accuracy of +/-2.5ºC with no complicated circuitry required. Additional features include a power down function, low current consumption (75µA),and an analog temperature output pin, making them suitable for applications of all types, including overheat detection and temperature monitoring circuits.
ROHM's easy-to-use high efficiency H-bridge drivers for DC brush motors enable speed control while driving by performing switching operations of the output MOSFETs via PWM conversion of speed setting voltage inputs.
Multiple protection circuits and careful layout design ensures high reliability, while PWM drive reduces power consumption. The result is the optimal solution for virtually any application.
ROHM offers the most efficient, coolest class D speaker mplifiers on the market. Optimized for high performance compact equipment with limited space for adequate heat dissipation, ROHM Class D amps provide the ideal solution in a space efficient, energy saving design without sacrificing sound quality.
Energy-saving Class D operation, combined with circuit optimization, has resulted in low 6.5mW power consumption for longer battery life, making ROHM's Hi-fi digital input Class D headphone amps ideal for portable audio devices of all types.
ROHM's ultra-low saturation linear power supply controllers are optimized to provide a high level of precision and excellent responsiveness for power supplies required by chipsets. The external FET allows customization of the output current as well as the difference between the input and output voltages. Replace the multiple excessive switching power supplies prevalent in today's inefficient PC systems with ROHM's supply controller.
BU520□□series
Hall ICs enjoy widespread use due to their high sensitivity and low power consumption. ROHM utilizes Hall ICs not for constant sensing, but for detection within a fixed period, resulting in a current consumption of only 5µA (typ.). In addition, CMOS output minimizes power consumption during magnetic detection.
