lb1997 Sanyo Semiconductor Corporation, lb1997 Datasheet - Page 4

• Manufacturer Part Number: lb1997
• Description: Three-phase Brushless Motor Driver For Cd-rom Spindle Drive
• Manufacturer: Sanyo Semiconductor Corporation

Truth Table
Input:
H: Input 1 is higher in potential than input 2 by at least 0.2V.
L: Input 1 is lower in potential than input 2 by at least 0.2V.
Pin Assignment
1
2
4
6
3
5
Phase W –> Phase V
Phase V –> Phase W
Phase W –> Phase U
Phase U –> Phase W
Phase V –> Phase W
Phase W –> Phase V
Phase U –> Phase W
Phase W –> Phase U
Phase U –> Phase V
Phase V –> Phase U
Phase V –> Phase U
Phase U –> Phase V
Source –> Sink
FRAME GND
PWR GND
SIG GND
BRAKE
V CREF
W OUT
H
H
L
H
U
L
L
S/S
NC
NC
CC
NC
RS
FG
FC
V C
10
11
12
13
14
Hall input
1
2
3
4
5
6
7
8
9
H
L
L
H
L
H
V
LB1997
W
L
L
H
L
H
H
LB1997
Control
V
H
L
H
L
H
L
H
L
H
L
H
L
C
28 V H
27 W IN 1
26 W IN 2
25 V IN 1
24 V IN 2
23 U IN 1
22 U IN 2
21 V CC 1
20 RF
19 NC
18 V CC 3
17 V CC 2
16 U OUT
15 V OUT
FRAME GND
Top view
A11182
No. 5978-4/9