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參數(shù)資料
| 型號： | TDA7278 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, PLASTIC, QFP-44 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 276K |
| 代理商： | TDA7278 |
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
V bg
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 1
H IN 1
H OUT 1A
H OUT 1B
FOCUS
ACTUATOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 3
H IN 3
H OUT 3A
H OUT 3B
TRACKING
ACTUATOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 2
H IN 2
H OUT 2A
H OUT 2B
SPINDLE
MOTOR
DRIV
VHIGH
ER
+
-
S
R
Q
VBAT
-
+
DRIV
VHIGH
DRIV
VHIGH
FL IN 4
H IN 4
H OUT 4A
H OUT 4B
SLEDGE
MOTOR
M
DRIV
VHIGH
REFERENCE
and
THERMAL
VBG
ENABLE
Vbg
RESET
CONTROL
CRES
WD INP
VCPU
Vbg/2
-
+
-
+
VBAT
BEMP
BLOW
VCON
GND
ERROR
2
ERROR
4
VREF
(1)
ERROR
3
ERROR
1
VBAT
D94AU111A
22
470pF
10
F
38
11
10
23
430
37
43
35
10
F
47
H
13
14
FEEDBAKC
&
COMPENSATION
NETWORK
(see fig.4)
15
16
17
VBAT
12
2
F
18
24
100nF
19
1
F
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
H
10
F
100
H
10
F
100
H
10
F
100
H
10
F
Vbg
Figure 2: Test Circuit
TDA7278
6/15
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