MOC3081 Motorola, MOC3081 Datasheet - Page 3

• Manufacturer Part Number: MOC3081
• Description: 6-Pin DIP Zero-Cross Optoisolators Triac Driver Output
• Manufacturer: Motorola

APPLIED VOLTAGE
0 VOLTS
+400
Vdc
PULSE
INPUT
Motorola Optoelectronics Device Data
500
200
100
1.5
1.4
1.3
1.2
1.1
0.9
0.8
0.7
WAVEFORM
50
20
10
5
1
–40
Figure 5. Trigger Current versus Temperature
–40
–20
–20
Figure 3. Leakage with LED Off
MERCURY
T A , AMBIENT TEMPERATURE ( C)
WETTED
T A , AMBIENT TEMPERATURE ( C)
RELAY
0
t
0
versus Temperature
252 V
RC
R TEST
20
20
40
40
60
C TEST
NORMALIZED TO
V DRM = 800 V
80
T A = 25 C
60
D.U.T.
Figure 7. Static dv/dt Test Circuit
100
80
10 k
SCOPE
PROBE
X100
100
V max = 400 V
dv dt
+
1. The mercury wetted relay provides a high speed repeated pulse
2. 100x scope probes are used, to allow high speeds and voltages.
3. The worst–case condition for static dv/dt is established by
1.5
1.4
1.3
1.2
1.1
0.9
0.8
0.7
0.6
25
20
15
10
0.63 V max
to the D.U.T.
triggering the D.U.T. with a normal LED input current, then
removing the current. The variable R TEST allows the dv/dt to be
gradually increased until the D.U.T. continues to trigger in
response to the applied voltage pulse, even after the LED
current has been removed. The dv/dt is then decreased until the
D.U.T. stops triggering.
recorded.
1
5
0
–40
1
t
RC
–20
Figure 6. LED Current Required to Trigger
MOC3081 MOC3082 MOC3083
Figure 4. I DRM2 , Leakage in Inhibit State
2
+
0
PW in , LED TRIGGER PULSE WIDTH ( s)
t
504
RC
versus LED Pulse Width
T A , AMBIENT TEMPERATURE ( C)
20
versus Temperature
5
40
t
RC is measured at this point and
10
60
80
NORMALIZED TO:
20
I F = RATED I FT
PW in
100
q
100 s
50
100
3