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TA8493AF Datasheet(PDF) 9 Page - Toshiba Semiconductor

Part # TA8493AF
Description  3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TA8493AF Datasheet(HTML) 9 Page - Toshiba Semiconductor

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TA8493F/AF/BF
2002-01-31
9
When VC > Vref, one of three modes (reverse rotation, reversing brake or short brake mode) can be selected by
setting the MS and BRK pins appropriately.
<Function>
VC
<<<< Vref
VC
>>>> Vref
BRK
H
L
H
Forward
Forward
MS
L
Forward
Forward
In Short Brake mode, the upper-stage power transistor is turned on and the lower-stage power transistor
is turned off.
(short brake)
(reversing brake)
(1)
When stopping the motor by applying a reversing brake after a short brake
VC
Vref
Forward mode
Short
Brake
mode
Forward mode
MS: H or L, BRK: H
VC
Vref
BRK
H
L
Forward mode
Short
Brake
mode
Reversing
Brake
mode
Stopped
MS: L
BRK
H
L
H
Short
brake
Reverse
MS
L
Short
brake
Reversing
brake


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