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TDA7278 数据表(PDF) 6 Page - STMicroelectronics

部件名 TDA7278
功能描述  HIGH-EFFICIENCY CD ACTUATOR DRIVER
PDF  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7278 数据表(HTML) 6 Page - STMicroelectronics

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background image
OSCILL
VBAT
DRIV
VCPU
VHIGH
+
-
Vbg
STEP LP
or
STEP DOWN
STRUCTURE
(see fig.3)
OUT1
OUT2
IRC
INP
AUXIL.
STEP UP
VREF (2)
VHIGH
OUT
SYNC
SSCAP
ST CAP
Vbg
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 1
HIN 1
H OUT 1A
H OUT 1B
FOCUS
ACTUATOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 3
HIN 3
H OUT 3A
H OUT 3B
TRACKING
ACTUATOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 2
HIN 2
H OUT 2A
H OUT 2B
SPINDLE
MOTOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 4
HIN 4
H OUT 4A
H OUT 4B
SLEDGE
MOTOR
M
M
DRIV
VHIGH
REFERENCE
and
THERMAL
VBG
ENABLE
Vbg
RESET
CONTROL
CRES
WD INP
VCPU
Vbg/2
Vbg/2
-
+
-
+
VBAT
BEMP
BLOW
VCON
GND
VBAT
D94AU111A
22
470pF
10
µF
38
11
10
23
430
37
43
35
10
µF
47
µH
13
14
FEEDBAKC
&
COMPENSATION
NETWORK
(see fig.4)
15
16
17
VBAT
12
2
µF
18
24
100nF
19
1
µF
20
21
41
40
39
628
42
36
34
32
33
31
44
2
1
3
25
27
26
29
9
7
8
5
100
µH
10
µF
100
µH
10
µF
100
µH
10
µF
100
µH
10
µF
Vbg
Figure 2: Test Circuit
TDA7278
6/15



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