ANALOG DEVICES EXPANDS RANGE OF VERSATILE, SYNCHRONOUS BUCK CONTROLLERS

- ADI’s ADP1882 and ADP1883 buck controllers incorporate constant on-time and valley current-mode techniques to drive all N-channel power stages, regulating output voltages as low as 0.8 V.

Norwood, MA (07/19/2010) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced two current-mode, synchronous buck controllers that support input-power voltages ranging from 2.75 V to 20 V. The ADP1882 and ADP1883 synchronous buck controllers provide superior transient response through the use of a constant on-time, valley-current-mode control system. In addition, the valley-current-mode control architecture allows the ADP1882 and ADP1883 to offer optimum performance at low duty cycles and drive all N-channel power stages to regulate output voltages as low as 0.8 V with ±1.0 percent accuracy to as high as 7 V with output up to 15 amps. These new and versatile devices are well suited to intermediate rail or point-of-load generation in consumer, industrial instrumentation, telecommunications, and networking applications.

“The new ADP1882 and ADP1883 buck controllers offer enhanced performance at low duty cycles by using a valley-current-mode control architecture,” said Laurence McGarry, marketing manager, Power Management Products Group. “Each is available in three frequency options: 300 kHz, 600 kHz, and 1 MHz. The ADP1883 offers an additional power saving mode capable of pulse skipping to maintain output regulation while improving system efficiency at light loads.”

ADP1882 and ADP1883 Synchronous Buck Controller Features and Benefits

  • An internally-fixed, soft-start period enables a limited input in-rush current from the input supply during startup
  • Reverse current protection during soft-start provides a pre-charged output
  • Constant on-time architecture enables fast transient response
  • A current-sense resistor is not required allowing improved system efficiency and ease-of-use
  • Thermal overload and short circuit protection allows for a more robust system design

The introduction of the ADP1882 and ADP1883 devices marks ADI’s continued expansion of the switching controller and regulator product families – following recent announcements of the ADP1870/ADP1871 and ADP1872/ADP1873 constant on-time, synchronous buck controllers and the ADP1877 fixed-frequency, dual buck controller. To download the data sheet, visit www.analog.com/pr/ADP1882ds.

Availability and Pricing

Product Samples Availability Temperature
Range
Price Each
Per 1,000
Packaging
ADP1882

ADP1883
Now Now −40°C to +125°C $1.03 10-Lead MSOP

For more information, visit http://www.analog.com/pr/ADP1882 or http://www.analog.com/pr/ADP1883. For more information on ADI’s integrated multi-function power portfolio, visit http://www.analog.com/Power. To connect with a specialist, cross reference tools, and for more resources on how to use and obtain ADI products, please click here: http://www.analog.com/buy.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

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Editor's Contact Information:

Howard Wisniowski
781/937-1517

howard.wisniowski@analog.com

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