Transcription of TC648 - Microchip Technology
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2001-2012 Microchip Technology 1TC648 Features Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life Efficient PWM Fan Drive to Supply Range:- Fan Voltage Independent of TC648 Supply Voltage- Supports any Fan Voltage Over-temperature Fault Detection Automatic Shutdown Mode for Green Systems Supports Low Cost NTC/PTC Thermistors Space Saving 8-Pin MSOP PackageApplications Power Supplies Computers Portable Computers Telecom Equipment UPSs, Power Amps General Purpose Fan Speed ControlAvailable Tools Fan Controller Demonstration Board (TC642 DEMO) Fan Controller Evaluation Kit (TC642EV)
TC648 DS21448D-page 6 2001-2012 Microchip Technology Inc. 3.0 DETAILED DESCRIPTION 3.1 PWM The PWM circuit consists of a ramp generator and threshold detector.
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