Datasheet

+V
S
O.S.
GND
8
3
4
LM75
C6
100 nF
R1
10k
R3
10k
7
6
5
1
2
A0
A1
A2
SCL
SDA
Optional but
Recommended
Pull-up
In Stand-alone
Mode
SHUTDOWN
BYPASS
+IN
-IN
C2
100 nF
C1
100 nF
R5 200k
R2
10k
R3
10k
R4
10k
C3
6.8 nF
C4
6.8 nF
C5
6.8 nF
GND
Vo2
Vo1
V
DD
LM4861M
+ 5 VDC
O.S.
GND
8
3
4
LM75
R1
10k
Q1
2N2222A
K1
5V
Relay
Heater
Heater
Supply
D1
1N4001
R2
10k
7
6
5
1
2
A0
A1
A2
SCL
SDA
Optional but
Recommended
Pull-up In
Stand-alone
Mode
C1
100 nF
+V
S
LM75B, LM75C
www.ti.com SNIS153B –JULY 2009–REVISED MARCH 2013
Figure 15. Simple Thermostat, Interface Optional
Figure 16. Temperature Sensor with Loudmouth Alarm (Barking Watchdog)
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