Driver IC provides closed-loop control around fan speed, temperature

Beijing, China—Andigilog has expanded its intelligent PC fan driver family with two products, one of which it claims is the first device to provide closed-loop speed control around fan speed and temperature.

The aMC8520 provides closed-loop speed control with thermal temperature compensation in a single device without the use of microcode. It is a highly integrated product for fans to run more quietly and reliably, increasingly important requirements in the PC market.

For PC applications as well as communications, consumer electronic and industrial systems requiring open loop performance, the aMC8510 offers both analog and digital speed control of DC brushless fans to address the critical issues of managing system temperature, fan noise and power consumption. The aMC8510 helps DC brushless fans run more efficiently due to intelligent speed management over the complete duty cycle, allowing the system to run cooler with less power and less noise.

The aMC8510 and aMC8520 include Andigilog's QuietStart technology, which manages acoustic noise at fan start-up and while the fan runs. This technology saves power and improves reliability by eliminating current surges in the system. The aMC8510 and aMC8520 also reduce the bill of materials for fans by combining analog and digital speed control inputs through a single pin.

Pricing: The aMC8510 is $1.50 each, and the aMC8520 is $2 each, in 1K unit quantities.

Availability: In environmentally-friendly RoHS-compliant and Pb-free matte SN lead finish packaging. General samples and an evaluation kit, including a tuning board, are available now with production planned for the third quarter of 2007.

Datasheets: click here.

Andigilog, (480) 940-6200,

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