TA8493AF Toshiba Semiconductor, TA8493AF Datasheet - Page 8

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

Functional Description
·
·
This IC is a 3-phase, full wave brushless DC motor driver of the direct PWM control type.
Control amp input circuit
Mode select/short brake circuit
The common mode input voltage ranges for both V
Relation between control input and PWM ON duty is shown below, PWM ON duty is 100%
when ïV
The input is provided with a dead-zone area whose voltage width is 100 mV (typ.)
ref
- V
MS
C
ï = 0.75 V (typ.)
V
C
100
0.5
V
ref
- 0.75
100 mV (typ.)
voltage width
C
Dead-zone
8
V
and V
C
V
ref
BRK
(V)
V
CC
ref
are 0.5 to 4.0 V.
V
ref
+ 0.75
V
ref
TA8493F/AF/BF
2002-01-31