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LS7541 Datasheet(PDF) 3 Page - LSI Computer Systems

Part # LS7541
Description  TOUCH CONTROL STEP DIMMER LIGHT SWITCH WITH AUTOMATIC GAIN CONTROL (AGC)
Download  5 Pages
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7541 Datasheet(HTML) 3 Page - LSI Computer Systems

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ELECTRICAL CHARACTERISTICS:
( All voltages referenced to Vss. TA = +25˚C unless otherwise specified.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
Supply Voltage
VDD
+4.5
-
+5.5
V
-
Supply Current
IDD
-
-
1.0
mA
Output off,
VDD = +5.0V
TRIG Sink Current
IO
-50
-
-
mA
VDD = +5.0V
Vo = VDD - 3V
TRIG Source Current
IO
+0.1
-
-
mA
VDD = +5.0V
Vo = VDD - 0.2V
TRIG Pulse Width
TW
-
100
-
µs
RC = 400k
Ω, 60Hz
-
-
115
-
µs
RC = 470k
Ω, 50Hz
TRIG Pulse Delay
Td
-
4.0
-
ms
Rc = 400k
Ω, 60Hz
(Medium Brightness)
-
4.8
-
ms
Rc = 470k
Ω, 50Hz
CLOCK Resistor
RC
-
400
-
k
Ω
60Hz
-
-
470
-
k
Ω
50Hz
CONTROL Resistor
-
-
10
-
M
Ω
-
Capacitor
-
-
1
-
µF
-
Touch Plate Capacitance
CL
-
-
600
pF
-
FIGURE 3
LS7541 BLOCK DIAGRAM
MODE
SYNC
CLOCK
TOUCH
CONTROL
ZERO-CROSS
DETECTOR
OSCILLATOR
AGC CIRCUIT
COUNTER
STEPPER
DECODER
OUTPUT
DRIVER
TRIG
7
V SS
V DD
3
5
4
1
2
6
+V
-V
8
7541-072805-3


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