Exar Introduces 1.5A PowerBlox Step Down Regulator
Exar Corp. introduced the XRP7659, the latest addition in its PowerBlox™ family of high voltage and high current step down regulators. With its high operating frequency, integrated high side MOSFET switch and control loop compensation, the XRP7659 reduces both overall component count and component sizes, thus offering the smallest total solution footprint of the whole PowerBlox family.
With a fixed frequency operation of 1.4MHz and optimized for a 12V input voltage, the XRP7659 is suitable for a variety of consumer oriented applications such as infotainment equipment and set top boxes. It is also well suited for distributed power architectures and for generic point of load conversions. Additionally, built in safety features like output over voltage, over temperature, cycle-by-cycle over-current and under voltage lockout (UVLO) protection ensure safe operation under abnormal operating conditions.
"The addition of the XRP7659 broadens the selection of PowerBlox solutions for our customers," said Eric Pittana, Exar’s Power Management Marketing Director. "It provides a very compact, high-performance solution that’s extremely easy to use, for point-of-loads up to 1.5Amp stepping down from the traditional 12V power rail."
The XRP7659 is a non-synchronous PWM step-down (buck) voltage regulator capable of delivering an output current up to 1.5A. A wide 4.5 to 18V input voltage range allows for single supply operation from industry standard 5, 9.6 and 12V power rails. With a 1.4MHz fixed operating frequency and current-mode control architecture, it provides fast transient response and achieves conversion efficiencies as high as 92%. An integrated soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA. The XRP7659 offers the following protection schemes: output over voltage (open load), thermal shut-down, cycle-by-cycle over-current limit, and under voltage lockout (UVLO).
The XRP7659 is available now in volume quantities. 1,000-unit price is $0.69 each. The XRP7659 comes standard in a RoHS compliant, halogen free 6 pin SOT-23 package.
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