TIMING CHARACTERISTICS
(See Figures 2, 3 and 4
):
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
CONDITION
SYNC
Frequency
SHORT
Touch
fs
T
SI
T
SI
T
S2
T
S2
Tw
Tw
40
42
50
-
70
333
400
infinite
infinite
-
-
158
-
Hz
ms
ms
ms
ms
μs
μs
deg
deg
-
-
-
-
-
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
-
-
LONG
Touch
342
410
TRIG
pulse width
-
-
130.2
156.2
-
1.4
Conduction Angle
incremental steps
(Note 1)
Soft-on slew rate
41
-
S
S
S
S
S
AA
S
AA
S
BA
S
BA
T
BD
T
BD
-
-
-
-
-
-
-
-
1.4
1.4
1.4
1.4
1.4
1.4
500
600
-
-
-
-
-
-
-
-
deg/4.17ms
deg/5ms
deg/33.3ms
deg/40ms
deg/66.7ms
deg/80ms
ms
ms
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
A0 to A1/A2 to A0 slew rate
(Note 2)
A1 to B1/B2 to A2 slew rate
(Note 3)
B1 to B2 delay
(Note 4)
Note 1
: Total number of steps = 83.
Note 2
: Number of steps from A0 to A1, or A2 to A0 = 68.
Note 3
: Number of steps from A1 to B1 or B2 to A2 = 15.
Note 4
: is at minimum between B1 and B2. T
BD
is applicable for LS7631 only.
For LS7632 when minimum is reached, dimming direction reverses only if the
LONG
Touch is terminated and reapplied.
7631/7632-112102-3
150o
100o
50o
OFF
150o
100o
50o
OFF
150o
100o
50o
OFF
MODE
MODE 1
MODE 2
SENS
T
S1
T
S2
342ms
SHORT
SHORT
LONG
SHORT
LONG
SHORT
LONG
A2
B2
B1
A1
A0
A2
B2
B1
A2
B2
B1
A1
A0
A0
A0
A1
A2
A2
SLOPE = S
BA
MEMORY
REVERSE
REVERSE
SLOPE = Ss
SLOPES = S
AA
FIGURE 3. LS7631 TRIG, vs TOUCH (SENS OR EXT)
TRIG
SYNC
T
W
FIGURE 2. TRIG OUTPUT CONDUCTION ANGLE,
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
REPLACEMENT FOR P/N SLB 0587
LS7631 and LS7632 can be used in place of the SLB 0587
without modifying the application circuit recommended by
the manufacturer of that IC.