Buck Regulator offers 29 V input, 4 A peak output.February 27, 2008 -
Featuring 1% set point accuracy, PowerBlox(TM) SP7656 step-down switching regulator offers adjustable over-current protection, adjustable soft start, under voltage lockout. This non-synchronous buck regulator has 600 kHz switching frequency and integrates Type-II compensation integration. Combining operation over 4.5-29 V range with 0.6 V output voltage capability, dc/dc regulator is suitable as 5, 12, or 24 V intermediate supply generator and low-voltage point of load power supply.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Exar Corp.
48720 Kato Road
Fremont, CA, 94538
USA
Exar Announces New PowerBlox(TM) Solution -- 29V Input, 4A Peak Output Current Buck Regulator in 8-Lead Surface Mount Power Package
FREMONT, Calif., Feb. 25 -- Exar (NASDAQ:EXAR) Corporation announces the latest addition to its PowerBlox(TM) family of high efficiency step-down switching regulators with the introduction of the SP7656 3A (4A peak) non-synchronous buck regulator. The new SP7656 is the first in a new series of reduced footprint non-synchronous PowerBlox(TM) devices, with integration of Type-II compensation. This modern regulator is ideal for use in systems deriving power off loosely regulated secondaries from isolated supplies commonly used in industrial systems, as well as intermediate bus voltages used in telecom systems. Other target applications include set top box (PVR/DVR), xDSL CPE equipment, modern digital televisions, and related systems applying power architectures that can benefit greatly from single stage conversions up to 4A peak current. The low output voltage capability also makes this an ideal choice for a highly accurate sub-1V core supply voltage for modern submicron ASIC, DSP and FPGA devices, typically utilizing a 5V or 3.3V system bus as the point of load regulation input bus.
"The SP7656 increases efficiency, extends input voltage range, provides lower output voltage capability, and enhances output accuracy over other monolithic non-synchronous buck regulators on the market today," said Jon Cronk, applications director, Power Management. "The SP7656 is architected to provide superior performance for low duty cycle conversion applications from a wide range of input voltages. Size reduction is achieved by reduced package size, integration of loop compensation components, and a high speed 600kHz switching frequency, typically 2x that of comparable devices on the market today."
The SP7656 provides features such as adjustable over current protection, adjustable soft start, under voltage lockout, and 1% set point accuracy. This versatile dc/dc regulator combines operation over a wide input range (4.5V to 29V) with extended low output voltage capability (0.6V), making it suitable as both a 5V, 12V or 24V intermediate supply generator and a low voltage point of load power supply. Input feed forward control provides excellent transient response while exceptional regulation accuracy is achieved through a 1% accurate reference.
Exar's PowerBlox family devices provide the industry's highest buck regulator power density, capable of delivering up to 12 Amperes at conversion efficiencies greater than 93% (SP7662) in less than 7 square cm of board space. Devices feature a pin compatible pathway to allow migration to higher current applications with minimal or no PCB layout change requires.
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
The SP7656 is available in 8-pin SOIC RoHS compliant, lead-free package compatible with JEDEC reflow cycle specifications for lead-free process. Volume pricing starts at $1.85, in 1K unit quantities. Additional information on this product can be found at http://www.exar.com/Common/Content/Pr... . Additional information on this and other power management products can be found at http://www.exar.com/Common/Content/Pr... . Samples, evaluation boards, and technical documentation are all available at www.exar.com .
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: http://www.exar.com/ .
CONTACT: Greg Kaufman, Marketing Communications of Exar Corporation, +1-510-668-7000
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