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L6246 数据表(PDF) 8 Page - STMicroelectronics

部件名 L6246
功能描述  12V VOICE COIL MOTOR DRIVER
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6246 数据表(HTML) 8 Page - STMicroelectronics

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background image
L6246
PQFP44
10
8
9
12
13
1K
100nF
ERR-
ERR_OUT
SENSE_OUT
1M
1K
1K
10K
VIN_OUT
VIN-
14
VIN+
10K
10K
10K
VCC/2
VREF
VCTL
15
VCC/2
34
7,35,43
CPGND
GND
Rs 0.2
LL
RL
VOICE COIL
MOTOR
OUT_
SENSE_IN-
SENSE_IN+
OUT+
42
6
5
36
VDD
100nF
VDD
18
22
µF
100nF
VCC
V
CC
VCC
V
CC
GATE DRV
19
41
37
44
27
G
S
D
V
BEMF
FROM SPINDLE
DRIVER
100nF
40
28
R
PARK
VCP
P322
1
µF
51K
26
12SEPT
(*)
25
5S
SEPT
(*)
10nF
C1
C2
38
39
21
5VREF
24
5VREFGND
5VREF
GND
22
12SEPT
1
µF
3
5SSEPT
1
µF
AE W GATE
MOTOR START
THERMAL SHTD
POR
17
16
4
20
32
ENABLE
30
VCM PARK
31
SPINDLE START
29
W GATE
2
FILTER_CAP
10.5V
INT.REG.
(*)
D95IN268
FILTER CAPACITORS TO BE SET IN APPLICATION
Typical Application Circuit
20K
2K
2K
VCC/2 + 10VSENSE
20K
V
CC/2
V
CC/2
SENSE
AMPL.
R1
ERROR
AMPL.
-
+
RC (=R1)
VCC/2 - (RA-RB) VIN
RA
RB
RB
RA
INPUT
AMPL.
-
+
R2
R3
C
VIN
V
SENSE
VCC/2
17.5K
1.1K
VCC/2
16.5K
VCC/2
VCC/2 + (RA/RB) (ZC/RC) VIN-10 (ZC/R1) VSENSE
-+
R
S
RL
LL
LOAD
VL
POWER
AMPL.
POWER
AMPL.
1.1K
Z
C
VL=32 ( (ZC/RC) VIN - 10 (Z
C/R1) VSENSE )
=ACPW *ACERR (ACIMP * VIN -ACSENSE *VSENSE )
D95IN269B
TO SENSE
AMPLIFIER +
-
-
+
-
+
-
+
Current Control Loop Circuit
L6246
8/12



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