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參數(shù)資料
| 型號(hào)： | LA6557H |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | 0.375 INCH, HEAT SINK, SOP-28 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 129K |
| 代理商： | LA6557H |
LA6557H
No.6350-3/6
Pin Assignment
1
2
3
4
5
6
7
FR
8
9
10
11
12
13
14
V
CC
2
V
O
5
V
O
5+
V
O
4+
V
O
4
V
O
3+
V
O
3
V
O
2+
V
O
2
V
O
1+
V
O
1
V
CC
1
V
IN
1
V
IN
1G
28
27
26
25
24
23
22
FR
21
20
19
18
17
16
15
REV
FWD
S-GND
MUTE
V
IN
4
V
IN
4G
V
CC
-S
V
REF
-IN
REG-OUT
REG-IN
V
IN
3G
V
IN
3
V
IN
2G
V
IN
2
LA6557H
Block Diagram
1
2
3
4
5
6
7
FR
8
9
10
11
12
13
14
VCC2
VO5
VO5+
VO4+
VO4
VO3+
VO3
VO2+
VO2
VO1+
VO1
VCC1
VIN1
VIN1G
15
16
17
18
19
20
21
22
23
24
25
26
27
28 REV
FWD
S-GND
MUTE
VIN4
VIN4G
VCC-S
VREF-IN
REG-OUT
REG-IN
VIN3G
VIN3
VIN2G
VIN2
+
+
11k
22k
CH5
CH4
CH3
CH2
CH1
+
11k
22k
FR
+
11k
22k
+
+
+
11k
22k
MUTE
Thermal shutdown circuit
Power supply
for channels
3,4, and 5
The MUTE pin functions as follows:
High: output on
Low: output off
Output
control
Level
shifter
Level
shifter
Level
shifter
Level
shifter
Power supply for
channels 1 and 2
Signal system
power supply
5VREG
(with external PNP transistor)
Input
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