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LB11975 bảng dữ liệu(PDF) 7 Page - Sanyo Semicon Device

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Giải thích chi tiết về linh kiện  High-Speed CD-ROM Spindle Motor Driver IC
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No. 6497-7/12
LB11975
Pin Functions
Pin No.
Pin
Pin voltage
Function
Equivalent circuit
4 V to 16 V
Supplies the source side pre-drive
voltage.
9
VCC2
24
10k
VCC1
25 26
21
23
19
20
22
500
500
VCC1
18
16
2k
30k
VCC1
4 V to 16 V
Supplies the motor drive voltage.
8
29
VCC3
4 V to 16 V
Supply voltage for all circuits other than
the output transistors and the source side
pre-drive voltage
27
VCC1
Reverse rotation detection
High-level output: Forward rotation
Low-level output: Reverse rotation
24
RS
Single Hall device waveform Schmitt
comparator synthesized output
26
FG1
Three Hall device waveform Schmitt
comparator synthesized output
25
FG2
U phase Hall device input.
Logic high refers to the state where IN1
+
> IN1
.
23
IN1
+
1.5 V to
VCC1 – 1.5 V
V phase Hall device input.
Logic high refers to the state where IN2
+
> IN2
.
W phase Hall device input.
Logic high refers to the state where IN3
+
> IN3
.
Provides the Hall device lower side bias
voltage.
22
IN1
21
IN2
+
20
IN2
19
IN3
+
18
IN3
16
VH
15
75k
50k
VCC1
All circuits can be set to the non-operating
state by setting this pin to 0.7 V or under,
or by setting it to the open state.
This pin must be held at 2 V or higher.
15
S/S
0 V to VCC1
Ground for all circuits except the output
17
GND1
Continued on next page.


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