Phoenix, AZ - May 26, 2000 - ON Semiconductor (Nasdaq: ONNN), a leading provider of integrated circuits for networking and computing applications, today announced two new analog ICs addressing peripheral card and motherboard applications. The MC33565 is an intelligent regulator that enables switching between the main 5 volt supply and the 3.3 volt auxiliary supply and manages power efficiently when the system is inactive. The MC33567 is a dual linear controller that simplifies power management on computer motherboards.

Laurent Jenck, marketing manager for analog ICs at ON Semiconductor said, "The introduction of these two devices demonstrate ON Semiconductor's commitment to expand it's portfolio of application specific power management products for communication, networking and computing applications."

The MC33565 is a 200mA Smart Voltage Regulator for Peripheral Card Applications, complying with the instantly available requirements as specified by the Advanced Configuration and Power Interface (ACPI) guidelines. It is designed specifically for network interface cards, PCMCIA / PCI Interface cards, desktop computers, motherboards / mainboards and power supplies with multiple VINs.

The MC33565 provides a regulated output voltage of 3.3 volts via an internal low dropout 5.0V-to-3.3V voltage regulator or an internal P-channel MOSFET, depending on system requirements. Housed in a small SO-8 package, this smart IC is equipped with the necessary internal logic circuitry to detect whether the system is being powered from the main 5 volt power supply or the 3.3 volt auxiliary supply, and to ensure that the peripheral card is supplied with a constant and 'glitch-free' 3.3 volts, even during transitions to and from 'sleep' mode. Other features include low dropout voltage, output regulated to 2% over temperature, excellent line and load regulation and no reverse current flow during sleep mode.

The MC33567, referred to as the Dual Linear Controller for High Current Voltage Regulation, is a dual power supply controller that provides reliable regulation of high current supply planes. This advanced linear IC provides the necessary drive, sense and control signals to interface two separate N-channel MOSFETs as individual series pass elements regulating two different supply planes. The MC33567 will interface two separate N-channel MOSFETs, such as SOT-223, DPAK and D2PAK MOSFETs,

The MC33567 detects under-voltage conditions and places the system operation into a protected 'hiccup' mode, preventing any damage to the system and permitting recovery after the short circuit condition is corrected.

Offered in a space saving SO-8 package, this advanced linear IC minimizes the number of interconnections on the motherboard which results in simpler design architecture and lower total power supply costs.

The MC33567 is available in two versions. The MC33567-1 controls two separate series pass transistors to provide regulation for separate 1.5 volt and 1.8 volt supply planes. The MC33567-2 controls two separate series pass transistors to provide regulation for separate 2.5 volt supply planes.

Samples and production quantities of the MC33565D and the MC33567D (MC33567D-1,1R2, 2 and 2R2) are currently available. Pricing is suggested at $0.66 and $0.89 respectively, for quantities of 10K units. Datasheets and other technical information can be accessed at: power management

About ON Semiconductor

ON Semiconductor, formerly a division of Motorola, is one of the world's largest suppliers of analog, standard logic, and discrete semiconductors for data and power management. ON Semiconductor's products include integrated circuits for high-bandwidth data applications, analog ICs for power management and low-voltage power transistors. In addition to using micropackaging technology across all product families, ON Semiconductor offers the largest selection of discrete semiconductors in a variety of surface mount and standard packages. These semiconductors turn on and connect digital electronic products to our world. ON Semiconductor is the trade name of SCG Holding Corporation's affiliate, Semiconductor Components Industries, LLC.
Further information is available at the Company's website:

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Yinka Massally
Media Relations Manager
ON Semiconductor
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Group Manager
Brodeur Worldwide

About onsemi

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.


onsemi and the onsemi logo are trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the Company references its website in this news release, information on the website is not to be incorporated herein.

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