Spindle/vcm Motor Controller/drivers At78c7015 SummaryThe AT78C7015 is a CMOS monolithic device that integrates Spindle and VCM con-
trollers as well as power stages into one chip. The device operates from 3.3V power
supply. The AT78C7015 is designed for a small-form-factor hard disk drive application.
A precision low-voltage detection circuit monitors the power supply and initiates VCM
retract at voltage fault condition. A 3-line serial port Interface with read back capability
provides Interface to the Microprocessor
The Spindle driver features a transconductance Amplifier a Current Sense Amplifier
power output drivers, Sequencer internal delay/masking Logic Spindle brake circuit,
FLL, and charge-pump for locking the spindle to the programmed rotational speed.
The VCM driver features a transconductance Amplifier differential input Current Sense
Amplifier ramp load/unload capability, and power output Amplifier By ATMEL Corporation
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AT78C7015 Pb-Free | AT78C7015 Cross Reference | AT78C7015 Schematic | AT78C7015 Distributor |
AT78C7015 Application Notes | AT78C7015 RoHS | AT78C7015 Circuits | AT78C7015 footprint |