V
DD
D1
TOUCH
OUTPUT
Q1
R3
R1
R2
TOUCH
PLATE
TO SENS, PIN 5
Q2
R4
R1 = 1M D1 = 1N4148
R2 = 1M Q1 = MPS8599
R3 = 220k Q2 = MPS8099
R4 = 100k
R5 = 510k
R5
All Resistors 1/4W
FIGURE 6. Application Circuit For Touch Control Operation
The Application Circuit shown in Figure 6 can be applied to the Reverse Dimmer cir-
cuits shown in Figure 4 (Option 1) and Figure 5 (Option 2). The Touch Output is con-
nected to the SENSE input (Pin 5) of LS7636. When using the circuit shown in Figure
6, the following components must be removed in Figure 4 and Figure 5:
Figure 4 - Remove R6, D5, EXT SWITCH and SENSE SWITCH. C3 remains.
Figure 5 - Remove R5, D3, EXT SWITCH and SENSE SWITCH. C3 remains.
7636-041809-7
LSI [ LSI COMPUTER SYSTEMS ]
