Datasheet

DRV102
15
SBVS009B
www.ti.com
APPLICATION CIRCUITS
FIGURE 14. Fluid Flow Control System.
FIGURE 15. Instrument Light Dimmer Circuit.
FIGURE 16. 4-20mA Input to PWM Output.
DRV102
Duty Cycle Adjust
Input
(On/Off)
Twisted Pair
5
6
V
S
Out
1
34
4-20mA
NOTE: (1) Rectifier diode required for inductive
loads to conduct load current during the off cycle.
100Ω
187Ω
Coil
(1)
2
Delay
Adjust
DRV102
Thermal Shutdown
Over/Under Current
24kHz
Oscillator
PWM
Delay
TTL Control Input
Off
On
Flexible Tube
Plunger
Pinch Valve
Solenoid Coil
V
S
5
Out
6
7
2
1
C
D
R
PWM
34Gnd
Flag
Delay
Adjust
Duty Cycle
Adjust
(1)
(10% to 90%)
Can drive most types
of solenoid-actuated
valves and actuators
NOTE: (1) Duty cycle can be programmed by
a resistor, analog voltage, or D/A converter.
Do not drive below 0.1V.
Microprocessor
+5V
5kΩ
V
S
DRV102
Lamp
Cadmium Sulfide
Optical Detector
(Clairex CL70SHL
or CLSP5M)
Aimed at
ambient
light
On/Off
λ
Brighter light results in
increased duty cycle
1
34
2
Delay
Adjust
10kΩ
V
S
5
Out
6