TA8493AF Toshiba Semiconductor, TA8493AF Datasheet - Page 9

• Manufacturer Part Number: TA8493AF
• Description: (TA8493xx) 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES
• Manufacturer: Toshiba Semiconductor

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