IXYS Semiconductors - Power and RF

Develops and Manufactures products to improve power conversion efficiency. Integrated circuits and RF power devices. ASICs, Pulsed Power Systems and Laser Diode Drivers also in their product portfolio. RF (now part of Littelfuse)

IXYS Semiconductors - Power and RF

They have HVIC chips for medical, telecommunication and power management applications including off AC line LED drivers. They also have the Zilog family of MCU's after Zilog Corporation became an IXYS Company.



Founded 1983, Corporate headquarters in Milpitas, California.

Address -1590 Buckeye Drive Milpitas, CA 95035-7418 United States.

Allegro MicroSystems - Power ICs and Hall-effect sensors

Manufacturer of Hall-Effect Sensor ICs, Power ICs, Power Management Chips. These are used in Home Appliances, Automotive, LED Lighting and Office Automation.

Allegro MicroSystems - Power ICs and Hall-effect sensors

Products include Regulator ICs, Switching Regulators, Off-Line Flyback Regulators, Stepper Motor Unipolar Drivers, Inverter Power Modules.

The Allegro ACS770 family of current sensor ICs provides economical and precise solutions for AC or DC current sensing. Typical applications include motor control, load detection and management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection.



Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional output voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.

Allegro MicroSystems, LLC,
Worcester Facility 115 Northeast Cutoff, Worcester, MA 01606, USA

Ricoh Electronic Devices - Smart Energy

Design and Manufacture semiconductor electronic devices, specialized design service for electronic devices and manufacturing service for such products.

Ricoh Electronic Devices - Smart Energy

Product line include - Power Management ICs, Real-time clock ICs, PC Interface and Communication LSI / Image Processing LSI.

Power Management ICs - DC/DC Converters, Battery Management, Watchdog Timer(W.D.T.) and Voltage Regulators.

The R1218x Series are PWM control type step-up DC/DC converter ICs with low supply current. It is fully dedicated to drive White LED with constant current.



Constant current can be set with an external resistance value. Dimming control is possible by PWM signal for CE pin. Feedback voltage is 0.2V, therefore power loss by current setting resistor is small and efficiency is good.

Ricoh Electronic Devices Company, Ltd.
13-1 Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN