LS7635-S 데이터 시트보기 (PDF) - LSI Corporation
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LS7635-S Datasheet PDF : 4 Pages
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The differences among all versions of LS7634 and LS7635 are:
LS7634 (LS7634FO)
Upon power-up, the TRIG output is Off.
(Upon power-up, the TRIG output is On at maximum conduction angle.)
When a LONG touch is applied, the dimming direction automatically re-
verses whenever maximum or minimum conduction angles are reached.
LS7635 (LS7635FO)
Upon power-up, the TRIG output is Off.
(Upon power-up, the TRIG output is On at maximum conduction angle.)
When a LONG touch is applied, the dimming stops whenever maximum
or minimum conduction angles are reached. In order to change dimming
levels from maximum or minimum, LONG touch must be removed and
reapplied.The purpose of this feature is to allow the user to positively
locate maximum and minimum conduction angles.
LS7635 NOTE:
If the User applies a LONG Touch when the TRIG Conduc-
tion Angle is within a “few” degrees of Maximum or Mini-
mum, the TRIG Conduction Angle can move to Maximum or
Minimum and stop without the User being able to observe a
change in brightness. There-fore, the User should be in-
structed that if no change in brightness is observed in re-
sponse to a LONG Touch, the LONG Touch should be re
moved and reapplied in order to produce a change in bright-
ness.
TABLE 1
MODE
SHORT TOUCH
PRE-TOUCH Ø POST-TOUCH Ø PRE-TOUCH Ø
LONG TOUCH
POST-TOUCH Ø
DIMMING
REVERSAL
(Note 5)
OFF
MAX(Note 1)
OFF/MIN
Varies up from MIN
N/A
0
ON
OFF
MAX
Varies down from MAX
N/A
INTERMEDIATE Varies from INTERMEDIATE
NO
OFF
1
ON
MEMORY
(Notes 2, 3)
OFF
OFF
MIN
MAX
INTERMEDIATE
Varies from memory (Notes 2, 3,4)
Varies up from MIN
Varies down from MAX
Varies from INTERMEDIATE
YES
N/A
N/A
YES
OFF
2
ON
MAX (Note 1)
OFF
OFF/MIN
MAX
INTERMEDIATE
Varies up from MIN
Varies down from MAX
Varies from INTERMEDIATE
N/A
N/A
YES
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
A soft turn-on is produced by slewing up the conduction angle, ø, from minimum at the rate of 1.4˚/8.33ms (60Hz).
A soft turn-on is produced by slewing up ø, from minimum to memory.
Upon power-up the memory value is defaulted to maximum conduction angle.
“Memory” refers to the conduction angle, ø, which existed prior to the current off-state.
A soft turn-on is produced by slewing up ø from minimum to memory upon which the dimming is started.
NO = Dimming direction does not reverse from prior dimming direction.
YES = Dimming direction does reverse from prior dimming direction. N/A = Does not apply.
ABSOLUTE MAXIMUM RATINGS:
PARAMETER
DC supply voltage
Any input voltage
Operating temperature
Storage temperature
SYMBOL
VDD - Vss
VIN
TA
TSTG
VALUE
+7
Vss - 0.3 to VDD + 0.3
0 to +90
-65 to +150
DC ELECTRICAL CHARACTERISTICS:
(TA = +25˚C, all voltages referenced to Vss. VDD = +5V unless otherwise noted.)
UNIT
V
V
°C
°C
PARAMETER
SYMBOL
MIN
TYP
MAX UNIT
CONDITION
Supply voltage
Supply current
SYNC Lo
VDD
4.5
5.0
5.5
V
-
IDD
-
300
400
µA
Output unloaded
VDD = 5.5V
VISL
-
-
2.1
V
-
SYNC Hi
VISH
2.9
-
-
V
-
EXT, SENS Lo
VIEL
-
-
1.5
V
-
EXT, SENS Hi
TRIG Lo
TRIG Hi
VIEH
3.5
-
-
V
-
VOL
-
0.2
-
V
-
VOH
-
5.0
-
V
-
TRIG Sink Current
7634/7635-010906-2
ITSNK
35
-
-
mA
VOTRIG = 2.5V
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