lb11891v Sanyo Semiconductor Corporation, lb11891v Datasheet - Page 9

• Manufacturer Part Number: lb11891v
• Description: Three-phase Brushless Motor Driver For Streaming Tape Drives
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions and Equivalent Circuits
Pin No.
6, 8
16
17
18
19
20
21
12
10
11
22
23
24
3
5
7
9
ANGLE
W-OUT
Symbol
U-OUT
V-OUT
W
W
U
U
V
V
VH+
VH–
FG1
FG2
VS
FG
Rf
IN
IN
IN
IN
IN
IN
1
2
1
2
1
2
0 to V
0 to V
Voltage
CC
CC
1
2
Capstan motor driver U, V, and W phase
Hall effect sensor inputs. The logic high
state indicates that IN1 > IN2.
Controls the gain from the Hall inputs to
the output. The gain is controlled by the
resistor inserted between this pin and
ground.
Power supply that determines the
amplitude of the output to the capstan
motor. This voltage must be lower than
V
Capstan motor driver U, V, and W phase
outputs.
The Hall effect sensor element bias
voltage supply. A voltage of 0.85 V
(typical) is generated between the VH+
and VH– pins. (When IH is 5 mA)
Comparator output for U
Comparator output for V
Three-phase synthesized output for the
U, V, and W phase comparator output.
CC
2.
Function
IN
IN
1 and V
1 and U
IN
IN
2.
2.
LB11891V
1.2VTYP
1/4*VS
1/4*VS
12
20 k
0.3 V
Equivalent circuit
11
400
400
200
Continued on next page.
200
22
V CC 1
23
3
5
7
9
6
V CC 2
No. 7113-9/11
16
18
20
V CC 1
24
8
V CC 1
10
17
19
21