TA8493AF Toshiba Semiconductor, TA8493AF Datasheet - Page 3

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

PIN Assignment
Terminal
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
Terminal
Symbol
L
L
GND2
GND1
L
FGO
BRK
OSC
N.C.
V
C
V
V
b
a
R
H
H
H
H
V
R
H
H
c
HB
MS
SB
V
C
L
L
L
CC
M2
RF
M1
F1
b
b
a
a
ref
F2
(G)
(G)
c
c
(G)
a
C
c
b
d
-
+
-
+
+
-
RUN/STOP control terminal
GND
FG amplifier output terminal
GND
Mode select terminal
b-phase upper side power transistor (base)
output terminal
a-phase upper side power transistor (base)
output terminal
a-phase output terminal
Supply voltage terminal for motor drive
Output current detection terminal
Output current filter terminal
Brake mode select terminal
b-phase negative hall signal input terminal
b-phase positive hall signal input terminal
a-phase negative hall signal input terminal
a-phase positive hall signal input terminal
c-phase positive hall signal input terminal
a-phase negative hall signal input terminal
Hall element bias terminal
Forward/reverse changeover gain
adjustment terminal
Supply voltage terminal for control circuits
Control amplifier input terminal
Control amplifier reference voltage input
terminal
Triangular wave oscillation terminal
Output current detection terminal
c-phase upper side power transistor (base)
output terminal
c-phase output terminal
Supply voltage terminal for motor drive
b-phase output terminal
Function
3
Keep open.
Keep open.
Connect to the coil.
Connect to V
H: RUN, L: STOP
Sets limiter current value.
Connect to R
terminal and GND.
Connect a capacitor between this terminal
and GND.
Outputs a signal whose frequency is
determined by the CD rotation frequency.
Output mode when V
Connect to hall element output terminal.
Connect to hall element output terminal.
Connect to hall element output terminal.
Connect to hall element output terminal.
Connect to hall element output terminal.
Connect to hall element output terminal.
Open collector output. Connect to the
negative side of hall element bias line.
Adjust a rotation direction changeover gain
V
Use the control signal as input.
Use the reference voltage for the control
amplifier as input.
Connect a capacitor between this terminal
and GND.
Sets limiter current value.
Connect to R
terminal and GND.
Determines output mode.
Keep open.
Connect to the coil.
Connect to V
Connect to the coil.
CC (opr)
= 4.5 to 5.5 V
M1
M2
F2
F1
externally and between this
externally and between this
externally.
externally.
TA8493F/AF/BF
Remarks
¾
C
¾
> V
ref
2002-01-31