ROHM Semiconductor designs and manufactures semiconductors, integrated circuits, and other electronic components for the wireless, computer, automotive, and consumer electronics markets. ROHM Semiconductor's product portfolio ranges from audio/video ICs, wireless audio links, image sensors, noise protection discretes, memory products with double-cell technology, energy-efficient power management components, and LEDs.
ROHM Semiconductor Ultra Compact MOSFETs & Bipolar Transistors have the smallest transistor package on the market which is optimized for thin, compact portable devices. The VML0806 case type measures just 0.8mm×0.6mm, with a height of only 0.36mm. As portable devices, such as smartphones and digital cameras get smaller and more sophisticated, thinner, more compact components are required. Until now, problems related to internal element miniaturization, bonding stability, package process accuracy, and surface mount technology limit the smallest conventional transistors to the 1006 size (1.0mm×0.6mm, t=0.37mm). ROHM was able to overcome these challenges by utilizing a smaller element and high-precision package process technology, resulting in an unprecedentedly compact form factor.
ROHM Semiconductor's SiC Schottky Barrier Diodes have a total capacitive charge (Qc) that is small, which reduces switching loss, and enables high-speed switching operations. In addition, unlike silicon based fast recovery diodes where the trr increases along with temperature, SiC devices maintain constant characteristics, resulting in better performance. Ideal for use as key devices in a variety of applications including inverters and chargers for EV and solar power conditioners.
Rohm's BU52xxx Hall Effect ICs are magnetic switches that can operate both S- and N-pole, upon which the output goes from Hi to Low. Features include omni-polar detection, micro power operation, ultra-compact and ultra-small package, and is available in 1.8V, 3.0V, 3.3V and 5.0V power supply voltages. Typical applications include mobile phones, notebook computers, digital video camera, and digital still camera.
Rohm's BH1730FVC Ambient Light Sensor is a digital 16-bit serial output type ambient light sensor IC for I2C bus interface. This device is the most suitable to obtain the ambient light data for adjusting LCD backlight power of a TV or mobile phone. It is possible to detect a very wide range light intensity (0.008 - 65535 lx ). Features include an I2C bus interface, illuminance to digital converter, a very wide range and high resolution, low current by power down function, and it has a small measurement variation (+/- 15%). Applications for this device include LCD TV, mobile phone, notebook, PC, portable game machine, digital camera, digital video camera, PDA, and LCD display.
ROHM Semiconductor Evaluation Boards for BD9673 and BD9876 were designed to aid designers in evaluating BD9673EFJ and/or BD9876EFJ. These evaluation boards accept a wide power supply of 7-42V, a step down output of 1.2V/1.8V/3.3V/5V or any other user defined voltage can be produced. The ICs feature an internal 200mohm Nch MOSFET (3.5A max) and a synchronization frequency range of 200 kHz to 500 kHz. A Soft Start circuit prevents in-rush current during startup along with UVLO (low voltage error prevention circuit) and TSD (thermal shutdown detection) protection circuits. An EN pin allows for simple ON/OFF control of the IC to reduce standby current consumption.
ROHM's BP5890 is an AC input non-isolated LED driver. BP5890 features
constant current output for driving 4-8 1W LEDs via 80-264VAC input.
Measuring 16.0x100.2x17.0mm, BP5890 offers a AC90 to 264V input voltage,
10 to 28.8V output voltage, 350mA output current, and does not require
an external circuit.
ROHM's BP5875 LED Driver is designed as a more compact version of the BP5872 . BP5875 retains the same key advantages of BP5872, including a thin form factor, dimming compatibility, harmonics standards compliance, universal input, and high efficiency operation, making it ideal for a variety of applications. BP5875's compact size of 65×130×19.2mm makes it compatible with a variety of applications including ceiling light specifications. Using this LED driver, designers can easily enable dimming over a wide range (10-100%) using analog input. The BP5875 also features an active filter method with built-in PFC circuit that increases the power factor to 0.99, enabling support for high frequencies as well as compliance with IEC61000-3-2. Additionally, this LED driver provides dimming over a wide range (10-100%) is easily enabled using analog input. ROHM's BP5875 LED Driver is well-suited for production lighting (i.e. spotlights, downlights), landscape lighting (i.e. slimlights), residential lighting, (e.g. LED ceililights, baselights, lamps), and signage.
Rohm Semiconductor's SMLP34 PICOLED™-RGB (red, green, blue) is the smallest 3-color type LED in the world. The SMLP34 LED from Rohm Semiconductor is a 4-pin type LED with a low height that helps improve the color mixture. It measures 1.0 x 1.0 mm and is available in case size 1010 (0404).
Rohm Semiconductor's R6000/R8000 series Power MOSFETs for switching power supplies offer low on-resistance and low input capacitance. Other features of R6000/R8000 power MOSFETs from Rohm Semiconductor include high ESD, fast switching speed, guaranteed gate-source voltage of ±30V, Pb-free lead plating, and RoHS compliance.
Rohm Semiconductor's Switching Regulators with Built-in Power MOSFET (BU9000XGWZ, BD9876EFJ, and BD9673EFJ series) offer several crucial features, including the following:
-BU9000XGWZ: High efficiency with ultra low current PFM mode. BU9000XGWZ regulators from Rohm Semiconductors provide up to 1.0A load current and input voltage range of 3.0V to 5.5V, optimized for battery powered portable applications. These regulators have a mode control pin that allows the user to select PWM (Pulse Width Modulation) or PFM (Pulse Frequency Modulation).
- BD9876EFJ: Below high efficiency rate step-down switching regulator power MOSFET mainly used as a secondary side power supply. Features include internal 200mΩ Nch MOSFET, 3.0A output current, 300kHz oscillation frequency, feedback voltage 1.0V ± 1.0%, and internal soft start function.
- BD9673EFJ: Below high efficiency rate step-down switching regulator power MOSFET used mainly as a secondary side power supply. Features include internal 200 mΩ Nch MOSFET, 1.5A output current, synchronization to external clock (200kHz-500kHz), feedback voltage of 1.0V ± 1.0%, and ON/OFF control through EN Pin (Standby Current 0 A typ.)
Rohm Semiconductor's PICOLED™ RGB-side series surface mount chip LED is a three-color (red, green, blue) surface mount LED with white
diffused epoxy that is used as a source of lighting for display units. The PICOLED™ from Rohm Semiconductor has a lens dimension of 3.0 x 1.3 (t=0.43) mm and operating temperature range of -30ºC to +85ºC.