Date: 10/11/2010

Synchronous PWM buck converter from Exar with a maximum load current of 2A

Exar Corporation has released the XRP7664, a new synchronous Pulse Width Modulation (PWM) step-down converter with a maximum load current of 2 Amps and operating input voltage of up to 18V. This device is the latest addition to Exar's industry acclaimed PowerBlox family of high-voltage, high-current step-down regulators.

"This 2 Amp solution complements our existing 3, 6, 8 and 12 Amp converters from Exar's PowerBlox family and is part of Exar's continuous effort to provide designers with higher performing, cost effective solutions for point of load conversions," said Eric Pittana, director of marketing, Power Product Line. "Furthermore, the XRP7664 fills a pressing request from our customers for a technically viable and cost competitive alternative to other popular step-down converters."

Optimized for a 12V input voltage rail, yet equally capable of operating from the popular 5V rail, the XRP7664 addresses the needs for smaller footprint and substantial savings in cost sensitive applications. These include audio-video equipment such as set-top boxes, telecom, computing peripherals and more generally distributed point-of-load conversions.

Key Product Features

Reaching up to 93% efficiency in a compact "green" SOIC package, the XRP7664 operates at a fixed 340 kHz switching frequency allowing for small external components. The output voltage can be adjusted down to 0.925V, with 3% accuracy, via two external resistors, which can be achieved from any single input voltage from 4.75V to 18V. Design flexibility of any point-of-load supply with the XRP7664 is further enhanced with the availability of a dedicated enable function and programmable soft start. Built-in current limit, output over voltage and thermal shutdown protection provide the XRP7664 with fail-safe operations.

Package: 8-pin SOIC

Price: Starts at US$0.33 per device for 1K pieces

Availability: Now