lb1895 Sanyo Semiconductor Corporation, lb1895 Datasheet - Page 7

• Manufacturer Part Number: lb1895
• Description: 3-phase Brushless Motor Driver Cd-rom Spindle Motors
• Manufacturer: Sanyo Semiconductor Corporation

Pin Descriptions
Note: Numbers within ( ) are for LB1895D
Pin No.
10 (12)
12 (13)
13 (14)
14 (15)
15 (16)
16 (17)
17 (18)
18 (19)
8 (10)
9 (11)
6 (5)
4
V
V
V
V
W
U
U
V
V
W
W
VH
Symbol
CC
CC
CC
COMPO
IN
IN
IN
IN
COMPO
IN
IN
1
2
1
2
1
2
2
3
1
4 V to 13.6 V
2 V to 13.6 V
4 V to 6 V
1.2 V to
V
1.2 V to
V
CC
CC
Voltage
1 –1 V
1 –1 V
(15)
(17)
14
16
(13)
12
150µA
75µA
30k
200
200
25µA
LB1895, 1895D
25µA
2k
Equivalent circuit
10k
25µA
25µA
(11, 12)
200
V CC1
9 10
V CC1
(19)
18
25µA
200
A06720
A06717
(14)
V CC1
13
A06718
V CC1
A06719
(16)
(18)
15
17
Supply pin that provides pre-drive
voltage for the source side.
Supply pin that provides voltage
for the constant current control
amplifier.
Supply pin that provides voltage
for all circuits except the output
transistor, source-side pre-drive,
and constant current control
amplifier.
V-phase Hall element waveform
Schmitt comparator output pin.
W-phase Hall element waveform
Schmitt comparator output pin.
U-phase Hall element input pin.
Logic HIGH is represented by
U
V-phase Hall element input pin,
and V-phase Schmitt comparator
input pin for reverse detection.
Logic HIGH is represented by
V
W-phase Hall element input pin,
and W-phase Schmitt comparator
input pin for reverse detection.
Logic HIGH is represented by
W
This pin provides the lower bias
voltage for the Hall element.
IN
IN
IN
1 > V
1 > U
1 > W
IN
IN
IN
2.
2.
Continued on next page.
Description
2.
No.5634-7/12