Fan predriver chips boost performance

The aMC8510 fan predriver provides all required functions to implement open-loop fan-speed control, while the aMC8520 fan predriver provides closed-loop speed control with thermal temperature compensation in a single device without the use of microcode. Both devices include QuietStart technology, which manages acoustic noise at fan startup and while the fan runs.

The parts also combine analog and digital speed control inputs through a single pin. Protection features include programmable cycle-by-cycle current-limit protection, undervoltage lockout, and thermal shutdown. (Ea/1,000: aMC8510, $1.50; aMC8520, $2.00prod qty 3rd qtr.)

Andigilog , Tempe , AZ
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