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LM621

Part Number	LM621
Manufacturer	National Semiconductor
Description	LM621 Brushless Motor Commutator
Published	Mar 22, 2005
Detailed Description	LM621 Brushless Motor Commutator August 1992 LM621 Brushless Motor Commutator General Description The LM621 is a bipol...
Datasheet	LM621 PDF File

Overview

LM621 Brushless Motor Commutator August 1992 LM621 Brushless Motor Commutator General Description The LM621 is a bipolar IC designed for commutation of brushless DC motors The part is compatible with both three- and four-phase motors It can directly drive the power switching devices used to drive the motor The LM621 provides an adjustable dead-time circuit to eliminate ‘‘shootthrough’’ current spiking in the power switching circuitry Operation is from a 5V supply but output swings of up to 40V are accommodated The part is packaged in an 18-pin dual-in-line package Y Y Y Features Y Y Y Y Y Adjustable dead-time feature eliminates current spiking On-chip clock oscillator for dead-time fea...

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