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Exar Offers New
Solutions for Driving High Power LEDs

Exar Corporation Press Release - 2/06/2008

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Designed to meet the needs of the latest high current LEDs such as the 1.5Amp Luxeon K2

Exar Corporation

Exar Corporation

FREMONT, Ca. - Exar Corporation (Nasdaq: EXAR) has released the SP7600 LED driver capable of driving high power LEDs up to 2Amps. The SP7600 is a single chip switching buck LED driver with an integrated 100mohm MOSFET in a thermally enhanced SO-8 package. With a 4.5V to 29V operating range this LED driver can support most retail and architectural lighting systems which typically use 12V or 24V power sources. New consumer electronics devices can also find a use for this high current LED driver, such as the latest LED compact projectors.

"The SP7600 is the highest current monolithic LED driver on the market and is designed to meet the needs of the latest high current LEDs such as the latest 1.5Amp Luxeon K2," said Jon Cronk, director, Power Management Marketing. "The monolithic SP7600 is Exar's second is a series of LED driver products targeted at the architectural and general lighting markets."

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Key Product Features

Both PWM dimming up to 1kHz, and analog dimming are supported by the SP7600. With a 0.2V feedback, power dissipation in the current sense resistor is minimized resulting in efficiency peaking at 95%, and the 1.2MHz operating frequency allows for a minimal footprint design which fits in the same board space as a 1.5Amp Luxeon K2 and it's heat sink. Operation at 1.2MHz at the maximum input voltage of 29V can be a challenge for many buck regulators but with a guaranteed minimum on-time of 100ns the SP7600 can easily convert from 29V to the 4V across the LED. There is also an adjustable peak current limit control to protect the internal switch in the case of a fault condition.

Power Management Products

Highly reliable, efficient, and accurate, power management is a critical part of any technology system. Exar has a broad array of high-performance and industry-proven power management solutions including handset and lighting controls, power conversion, and standard linear devices.

Prices, Packages, Availability and Additional Information

Samples of the SP7600 are available now. The operating range is -40 degrees C to +85 degrees C temperature range. In 1k piece quantities the SP7600 is $1.49 and additional information on this product can be found at Additional information on this and other power products can be found at

About Exar

Exar Corporation is Powering Connectivity by delivering highly differentiated silicon solutions empowering products to connect. With distinctive knowledge in analog and digital technologies, Exar enables a wide array of applications such as portable devices, home media gateways, communications systems, and industrial automation equipment. Exar has locations worldwide providing real-time system-level support to drive rapid product innovation. For more information about Exar visit: