LS7231 Просмотр технического описания (PDF) - LSI Computer Systems
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LS7231 Datasheet PDF : 8 Pages
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ABSOLUTE MAXIMUM RATINGS:
PARAMETER
SYMBOL
DC Supply Voltage
VSS
Any Input Voltage
VIN
Operating Temperature
TA
Storage Temperature
TSTG
DC ELECTRICAL CHARACTERISTICS:
(TA = 25˚C, all voltages referenced to VDD)
PARAMETER
Supply Voltage
Supply Current
SYMBOL
VSS
ISS
Input Voltages:
DOZE LO
DOZE HI
SYNC LO
SYNC HI
SENS LO
SENS HI
EXT LO
EXT HI
VIZL
VIZH
VIRL
VIRH
VIOL
VIOH
VIVL
VIVH
Input Current:
SYNC, SENS, EXT HI
IIH
VALUE
+20
VSS -20 to VSS + 0.5
0 to +80
-65 to +150
UNIT
V
V
˚C
˚C
MIN
+12
–
TYP
–
1.0
0
–
VSS-2 –
0
–
VSS-5.5 –
0
–
VSS-2 –
0
–
VSS-2
–
–
–
MAX
+18
1.4
VSS-6
VSS
VSS-9.5
VSS
VSS-8
VSS
VSS-8
VSS
110
UNIT
V
mA
V
V
V
V
V
V
V
V
µA
SYNC, SENS, EXT LO
IIL
–
–
100
nA
DOZE HI
IIH
–
–
100
nA
DOZE LO
IIL
–
–
100
nA
TRIG HI Voltage
VOH
–
VSS
–
V
TRIG LO Voltage
VOL
–
VSS-8
–
V
TRIG Sink Current
IOS
25
–
–
mA
CONDITION
-
VSS = +15V,
output off
-
-
-
-
-
-
-
-
With Series 1.5MΩ
Resistor to
115VAC Line
-
-
-
-
VSS = +15V
VSS = +15V
VOL = VSS-4V
TIMING CHARACTERISTICS (See Figures 2 and 3):
All timings are based on fs = 60Hz, unless otherwise specified. 50Hz timings are 1.2 times 60Hz timings.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
SYNC Frequency
fs
40
-
70
Hz
SHORT TOUCH
TS1
42
-
333
ms
(ON/OFF Operation)
LONG TOUCH
TS2
342
-
infinite
ms
(Dimming Operation)
DOZE Frequency
-
-
-
500
Hz
TRIG Pulse Width
TW
-
33
-
µs
TRIG Conduction-Angle
Ø
41
-
158
degrees
(Note 1)
Ø Period (Max to Max in
-
-
7.64 -
seconds
continuous dimming)
A1B1 = B2A2 duration
-
-
934
-
ms
B1B2 Min. intensity dwell
-
-
500
-
ms
NOTE 1.
In the circuit schematic shown in Figure 5, the SYNC input signal is delayed in phase with respect to the AC Line by
about 7°. This delay reduces the conduction angle, Ø with respect to the AC Line by 7° from the values shown above.
7231-34-041195-3
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