FIGURE 3. TYPICAL TRIAC WALL SWITCH APPLICATION

AMP 1

OUT

AMP 1

(-) IN

AMP 2

(-) IN

AMP 1

(+) IN

AMP 2

OUT

5V REG

OUT

OSC

TIMER

CONTROL

AC

DEAD TIME

SEL

INH

TRIAC

OUT

PULSE

MODE

SEL

LED

OUT

AC MAINS

LOAD

SW

TI

MT2

MT1

R7

R11

C7

Z1

D1

R9

C9

R10

C8

R8

C4

R4

C5

R5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

C2

R2

R6

R1

C1

PIR

SENSOR

R12

R14

LDR

R13

R15

LED

R3

C3

LS6501LP

C6

G

+

-

+

-

+

-

+

-

N

P

S1

S1 = SPDT (On - Off - On)

SPDT (On -On)

S1

R1 = 36kΩ

R8 = 1kΩ

R2 = 36kΩ

R9 = 910kΩ

R3 = 2.7MΩ

R10 = 7.5kΩ

R4 = 36kΩ

R10 = 3.6kΩ

R5 = 2.7MΩ

R11 = 100Ω

R6 = 36kΩ

R12 = 1.0MΩ

R7 = 270Ω, 1/2W

R13 = 1.0MΩ

R7 = 1kΩ, 1W

R14 = 910kΩ

R15 = 3.6kΩ

All Resistors 1/4W, all Capacitors 10V

unless otherwise specified.

C1 = 100µF

C8 = 1000µF

C2 = 33µF

C9 = 0.1µF, 250V

C3 = 0.01µF

C9 = 0.1µF, 400V

C4 = 33µF

D1 = 1N4004

C5 = 0.01µF

LDR = SILONEX NSL-19M51 (Typical)

C6 = 0.1µF

Z1 = 9.1V, 1/2W

C7 = 0.47µF, 250V

T1 = Q4008L4 (Typical)

C7 = 0.33µF, 400V

T1 = Q5004L4 (Typical)

PIRs = Perkin-Elmer LHi 958, 878; Nicera RE200B, SDA02-54 (Typical)

6501LP-101308-5

*

*

*

*

NOTES: 1. The R9, R10, C9 network provides a 2.7V Peak-to-Peak AC signal input to Pin 5.

2. The C8, D1, Z1, C7, R7 components generate the DC Supply Voltage for the LS6501LP.

3. The R2, C2, R3, C3, R4, C4, R5, C5, R6, C6 components and the two on-chip Differential Amplifiers

set a nominal gain of 5,500 with bandpass filtering of 0.13Hz to 6Hz.

4. The value of R6 may have to be adjusted if the particular PIR sensor selected causes the input static voltage

at Pin 15 to be out of the input dynamic range. This is specified under Electrical Characteristics as 0V to 2.5V.

5. Sensitivity can be adjusted to a lower value by increasing the value of R2 or R4

or by decreasing the value of R3 or R5.