R3
C3
+
C2
-
R2
PIR
SENSOR
R6
AMP 2
OUT
5V REG
OUT
14
R1
4
C8
RELAY
POWER SUPPLY
V
DD
OSC
13
+
-
TIMER
CONTROL
C1
V
DD
V
DD
C6
1
-
+
C4
R4
2
R5
3
V
DD
R15
SEE NOTE 2
AMP 1
OUT
AMP 1
(-)IN
16
AMP 2
(-)IN
AMP 1
(+)IN
15
C5
R12
5
AC
DEAD TIME
SEL
12
S1
R14
LDR
6
D1
RELAY
COIL
Q2
V
DD
R7
REGULATOR
8
+
-
RAW DC
INPUT
C7
R9
R10
Q1
R8
7
V
SS
11
INH
V
DD
SPDT (On - On)
R13
RELAY
OUT
PULSE
MODE
SEL
10
S1
V
DD
V
DD
LED
OUT
9
R11
LED
V
DD
LS6501LP
S1 = SPDT (On - Off - On)
R1 = 36kΩ
R2 = 36kΩ
R3 = 2.7MΩ
R4 = 36kΩ
R5 = 2.7MΩ
R6 = 36kΩ
R7 = 10kΩ
R8 = 3.6kΩ
R9 = 10kΩ
R10 = 18kΩ
R11 = 3.6kΩ
R12 = 1.0MΩ
R13 = 1.0MΩ
R14 = 910kΩ
R15 = 2.4MΩ
C1 = 100µF
C2 = 33µF
C3 = .01µF
C4 = 33µF
C5 = .01µF
C6 = .1µF
C7 = 100µF
C8 = .01µF
LDR = SILONEX NSL-19M52 (Typical)
Q1 = 2N3904
Q2 = 2N3906
REGULATOR = MC78L08 (Typical)
RELAY = No typical P/N
PIR = HEIMANN LHi 958 or 878 (Typical)
All Resistors 1/4W, all Capacitors 10V
NOTES:
1. The “Raw DC Voltage” into the Regulator can range between 11V and 25V and generates an 8V DC
Supply Voltage for the LS6501LP.
2. The R10, R9, Q2, R8, R7, Q1 components interface LS6501LP Pin 7 to a Relay Coil returned to a separate
High-Voltage DC Supply.
3. A Relay Coil returned to a maximum of 12.5V can be directly driven by the LS6501LP Pin 7.
FIGURE 4. TYPICAL DC RELAY APPLICATION
6501-070501-6
LSI [ LSI COMPUTER SYSTEMS ]
