TA8493AFG TOSHIBA Semiconductor CORPORATION, TA8493AFG Datasheet - Page 8

• Manufacturer Part Number: TA8493AFG
• Description: 3-phase Full Wave Brushless Dc Motor Driver Ic For Cd-rom Drives
• Manufacturer: TOSHIBA Semiconductor CORPORATION

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 ⎪V
The input is provided with a dead-zone area whose voltage width is 100 mV (typ.)
ref
− V
MS
C
⎪ = 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
2006-3-6