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參數(shù)資料
| 型號： | LS7338 |
| 廠商： | LSI Corporation |
| 英文描述： | DELAYED-OFF LIGHT SWITCH WITH PROGRAMMABLE ON-TIMER |
| 中文描述： | 延遲開關(guān)燈開關(guān)與可編程定時器 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 45K |
| 代理商： | LS7338 |
P
AC
MAINS
N
LOAD
C1
T1
L1
C2
R1
R2
A
B
R6
R9
C3
D1
5
6
7
8
4
3
2
1
R5
C3
C4
OUT
V
DD
SLV SENSE
V
SS
OSC
CAP SYNC
+
LS7338
R4
R3
SEE NOTE 1
FIGURE 5. A TYPICAL LIGHT SWITCH APPLICATION
G
MT2
MT1
Z1
-
ELECTRONIC
EXTENSION
(Figure 6)
EXTN
P
C7
SEE NOTE
3
SEE NOTE 2
R10
SENSOR
PLATE
R8
C6
R7
-
+
NOTES:
1.
Use Connection A when Neutral is not available. Use Connection B when Neutral is available.
2.
C7 is used only with Electronic Extension. R10 is used only with Mechanical Switch.
3.
Connection between Pin 2 and Pin 3 is removed when SLAVE input is used.
4.
See Table 2 for Component Functional Description
115VAC
270
, 1W
82
1.5M
2.7M
2.7M
1M
to 5M
100
(4)
(4)
1.5M
R10
150k
C1
0.15μF, 200V 0.15μF, 400V
220VAC
1k
, 2W
82
1.5M
4.7M
4.7M
1M
to 5M
100
(4)
(4)
1.5M
150k
115VAC
0.33μF,200V
0.22μF,200V
47μF
470pF
.047μF
(5)
0.1μF,200V
15V, 1/2W
1N4148
100μH
Q4008L4
220VAC
0.22μF,400V
0.1μF,400V
47μF
470pF
.047μF
(5)
0.1μF,400V
15V, 1/2W
1N4148
200μH
Q5004L4
(1)
R1
(2)
R1
(1)
C2
(2)
C2
R2
R3
R4
C3
C4
C5
C6
C7
Z1
D1
L1
(3)
R5
R6
R7
R8
R9
(6)
T1
(1)
Connection A
(2)
Connection B
(3)
Select for desired touch sensitivity
(4)
100k
≤
(R7 + R8)
≤
10M
(5)
(R7 + R8)C6
≥
5ms
(6)
Typical
All Resistors 1/4W, all Capacitors 25V unless otherwise specified
TABLE 2 . FIGURE 5 COMPONENT FUNCTIONAL DESCRIPTION
COMPONENTS FUNCTIONAL DESCRIPTION
Z1, D1, R1, C2, C3
DC Power Supply.
R2, C4
Current limit and filter AC for SYNC input.
C1, L1
RFI filtering for AC Mains.
C5
PLL filter capacitor.
R3, R4, R5
Network sets the Touch Sensitivity
for the SENSE input.
R6
Current limiting and isolation between
IC output and Triac Gate.
R7, R8, C6
Oscillator R-C network.
Potentiometer R6 required only if providing
user adjustment of Time-out, TD1.
R9, C7
Filter for the Electronic Extension
R10
Current limiting resistor for
the Mechanical Switch Extension.
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