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MIC502

Part Number	MIC502
Manufacturer	Micrel Semiconductor
Description	Fan Management IC Advance Information
Published	Mar 26, 2005
Detailed Description	MIC502 Micrel MIC502 Fan Management IC Advance Information General Description The MIC502 is a thermal and fan manage...
Datasheet	MIC502 PDF File

Overview

MIC502 Micrel MIC502 Fan Management IC Advance Information General Description The MIC502 is a thermal and fan management IC which supports the features for NLX/ATX power supplies and other control applications.
Fan speed is determined by an external temperature sensor, typically a thermistor-resistor divider, and (optionally) a second signal, such as the NLX “FanC” signal.
The MIC502 produces a low-frequency pulse-width modulated output for driving an external motor drive transistor.
Low-frequency PWM speed control allows operation of standard brushless dc fans at low duty cycle for reduced acoustic noise and permits the use of a very small power transistor.
The PWM time base is determin...

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