Datasheet

DRV101
15
SBVS008B
www.ti.com
FIGURE 16. Temperature Controller.
DRV101
V
S
On/Off
On/Off
Heating Element
Thermistor
Duty Cycle
Adjust
(a)
(b)
Higher temperature results in lower duty cycle
5
1
3
6
4
DRV101
REF200
V
S
V
S
Heating
Element
Duty Cycle
Adjust
5
1
32
NC
6
12
4
0.1µF
0.1µF
2µF Film
7
2
3
4
6
10µF
100µA 100µA
1kΩ
10kΩ
10MΩ
OPA134
IN4148
(1)
or
Thermistor
5kΩ at +25°C
20kΩ
4.7V
Integrator improves accuracy
NOTE: (1) Or any common silicon diode suited
to the mechanical mounting requirements.
Temperature
Control
7, 8
R
1
R
2