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LS7540 Datasheet(PDF) 2 Page - LSI Computer Systems

Part # LS7540
Description  TOUCH CONTROL CONTINUOUS DIMMER 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

LS7540 Datasheet(HTML) 2 Page - LSI Computer Systems

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ABSOLUTE MAXIMUM RATINGS:
PARAMETER
SYMBOL
VALUE
UNIT
DC supply voltage
VDD - VSS
+6
V
Any input voltage
VIN
VSS - 0.3 to VDD + 0.3
V
Operating temperature
TA
-20 to +85
°C
Storage temperature
TSTG
-65 to +150
°C
7540-060906-2
ELECTRICAL AND TRANSIENT CHARACTERISTICS:
( All voltages referenced to VSS. TA = +25˚C unless otherwise specified.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
Supply Voltage
VDD
+4.5
5.0
+5.5
V
-
Supply Current
IDD
-
-
500
uA
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
-
105
-
µsec
RC = 300k
Ω, 60Hz
-
-
126
-
µsec
RC = 360k
Ω, 50Hz
CLOCK Resistor
-
-
350
-
k
Ω
60Hz
-
-
420
-
k
Ω
50Hz
CONTROL Resistor
-
-
10
-
M
Ω
-
CONTROL Capacitor
-
-
1
-
µF
-
Touch Plate Capacitance
-
-
-
600
pF
-
Touch Duration
TS
67
-
-
ms
60Hz
TS
80
-
-
ms
50Hz
Conduction Angle
Ø
50
-
162
deg
-
Ø incremental steps
Ư
-
0.91
-
deg
-
(Note 1)
RAMP Resistor
R
2
-
no limit
k
Ω
-
RAMP Capacitor
C
200
-
no limit
pF
-
RAMP RC
TRC
25
-
no limit
µs
60Hz
RAMP RC
TRC
30
-
no limit
µs
50Hz
RAMP Rate
-
-
4TRC
-
sec/step
-
Max to off slew time
TT
-
496TRC
-
sec
-
Note 1: Total number of steps = 124.


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