lb1910 Sanyo Semiconductor Corporation, lb1910 Datasheet - Page 5

• Manufacturer Part Number: lb1910
• Description: Fdd Spindle Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
Pin No.
18
19
20
21
22
23
24
25
26
27
28
1
2
U
U
V
V
W
W
HB
FG
FG
FG
I
I
ID
+
–
IN
IN
IN
IN
IN
IN
Symbol
+
–
+
–
IN +
IN
OUT
+
–
–
1.5 V min
V
max
0.8 V typ
(I
2.5 V
L: 0.4 V max
H: 4.5 V min
H
CC
Pin voltage
= 5 mA)
– 1.0 V
Equivalent circuit diagram
LB1910
U phase Hall element input
V phase Hall element input
W phase Hall element input
Minus side connection for providing the Hall bias
current
This pin becomes open in the stopped state, thus
cutting the Hall bias current.
• FG amplifier plus input
• FG amplifier minus input
• FG amplifier output
Index input
Index output
A 2.5-V reference voltage is generated
internally.
Function
Continued on next page.
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