lb1913 Sanyo Semiconductor Corporation, lb1913 Datasheet - Page 3

• Manufacturer Part Number: lb1913
• Description: Fdd Spindle Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Assignment
Pin Functions
Pin no.
18
19
20
21
22
23
24
25
26
27
28
1
FG
FG
FG
W
W
U
U
V
V
Pin
HB
I +
IN
IN
IN
IN
I –
IN
IN
OUT
IN
IN
+
+
–
–
+
–
+
–
1.5 V min
V
0.8 V typ
(I
H
CC
Pin voltage
= 5 mA)
–1.0 V max
Equivalent circuit
LB1913
• U-phase Hall element input
• V-phase Hall element input
• W-phase Hall element input
• Minus-side pin for applying the Hall bias current
• FG amplifier plus input
• FG amplifier minus input
• FG amplifier output pin
• Index input
This pin goes to the open state in the stopped state
and the Hall bias is cut off.
A reference voltage of 2.5 V is generated by the IC
internally.
Function
Continued on next page
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