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MAX6620

Part Number	MAX6620
Manufacturer	Maxim Integrated Products
Description	Quad Linear Fan-Speed Controller
Published	Apr 25, 2009
Detailed Description	EVALUATION KIT AVAILABLE MAX6620 Quad Linear Fan-Speed Controller General Description The MAX6620 controls the speeds o...
Datasheet	MAX6620 PDF File

Overview

EVALUATION KIT AVAILABLE MAX6620 Quad Linear Fan-Speed Controller General Description The MAX6620 controls the speeds of up to four fans using four independent linear voltage outputs.
The drive voltages for the fans are controlled directly over the I2C interface.
Each output drives the base of an external bipolar transistor or the gate of a FET in highside drive configuration.
Voltage feedback at the fan’s power-supply terminal is used to force the correct output voltage.
The MAX6620 offers two methods for fan control.
In RPM mode, the MAX6620 monitors four fan tachometer logic outputs for precise (±1%) control of fan RPM and detection of fan failure.
In DAC mode, each fan is driven with a ...

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