FIGURE 3. LS7314-LS7315 BLOCK DIAGRAM
LEVEL 1
POWER
LEVEL
ROM
LEVEL 10
OFF
10
-
+
DRIVER
PL1
15
-
+
DRIVER
CONTROL
LOGIC
PHASE
ANGLE
POINTER
DIGITAL
COMPARATOR
DRIVER
13 TRIG
PL10
8
V
DD
-
+
PHASE-LOCKED
LOOP
AND
CLOCK
GENERATOR
V
DD
+
11
CAP
V
SS
V
SS
12
SYNC
-
TABLE 1. TRIG PHASE ANGLES, Ø
(1)
PL
1
2
3
4
5
6
7
8
9
10
Ø
*
43°
55°
68°
81°
95°
108°
122°
134°
147°
160°
% PWR
(2)
8
16
26
40
55
69
82
90
96
99
Ø
**
81°
105°
116°
120°
123°
129°
134°
160°
167°
175°
%PWR
(2)
40
67
77
80
83
87
90
99
99
99
FIGURE 4C and 4D NOTES
NOTE 1:
Value for 5mA LEDs.
NOTE 2:
Use zener which produces 6.2V ±5% at 500µA or
less, i. e. P/N MZ4627.
NOTE 3:
R6-C6 Snubber Network may be required for large
inductive loads.
NOTE 4:
Tie all unused touch inputs together and return to Vss
through 100k Ohm, 1/4W resistor.
NOTE 5:
The AC Mains Polarity shown is required for Touch
Control applications.
*LS7314 & LS7315
**LS7315-51
FIGURE 4C VALUE TABLE
CONDITION
(1), (3)
(1), (4)
(2), (3)
(2), (4)
(1) No LEDs
(3) 115VAC, C2 = 200V
C2(µF)
0.47
0.33
0.68
0.47
(2) 5mA LEDs
(4)
220VAC, C2 = 400V
(1)
(2)
The TRIG Phase Angles shown in TABLE 1 are referenced
to the SYNC input. Ø values are mask programmable.
The percentage of Full Power delivered to a resistive load
by the Triac Switch.
FIGURE 4A. PUSHBUTTON INTERFACE FOR LS7315
PL10
PL1
OFF
FIGURE 4B. TOUCH INTERFACE FOR LS7314
SEE NOTE 4
PL10
PL1
OFF
R8
R3
R7
R8
R7
R8
R7
Vss
V
DD
R8
TP
TP
R8
TP
R8
R3 = 10K , 1 / 4 W
R7 = 1M to 5M , 1/4W (Select for Sensitivity)
R8 = 2.7M , 1/4W for 115VAC Mains
R8 = 4.7M , 1/4W for 220VAC Mains
7314-033197-2
LSI [ LSI COMPUTER SYSTEMS ]
