ASSR-4110 Datasheet, PDF (11/16 Pages) AVAGO TECHNOLOGIES LIMITED – General Purpose, Form A, Solid State Relay (Photo MOSFET)

Applications Information
On-Resistance and Derating Curves
The Output On-Resistance, R_(ON), specified in this data
sheet, is the resistance measured across the output
contact when a pulsed current signal (Io=120mA) is
applied to the output pins. The use of a pulsed signal (≤
30ms) implies that each junction temperature is equal
to the ambient and case temperatures. The steady-
state resistance, Rss, on the other hand, is the value
of the resistance measured across the output contact
when a DC current signal is applied to the output pins
for a duration sufficient to reach thermal equilibrium.
Rss includes the effects of the temperature rise in the
device.
Figure 1, 2, 3 and 4 specify the maximum average
output current allowable for a given ambient tem-
perature. The maximum allowable output current
and power dissipation are related by the expression
Rss=Po(max)/(Io(max))² from which Rss can be calculat-
ed. Staying within the safe area assures that the steady
state MOSFET junction temperature remains less than
125°C.
Turn On Time and Turn Off Time Variation
The ASSR-41xx Series exhibits a very fast turn on and
turn off time. Both the turn on and turn off time can
be adjusted by choosing proper forward current as
depicted in Figures 11 and 13. The changes of the turn
on and turn off time with ambient temperature are also
shown in Figures 12 and 14.
0.12
IF = 10mA, 4-Layer Board
0.12
I_F = 10mA, 4-Layer Board
0.08
Safe
Operating
Area
0.04
0.08
Safe
Operating
Area
0.04
0
-40 -20 0
20 40 60 80 100
TA - TEMPERATURE - °C
Figure 1. Maximum Output Current Rating vs Ambient Temperature
(ASSR-4110-003E)
0
-40 -20 0
20 40 60 80 100
TA - TEMPERATURE - °C
Figure 2. Maximum Output Current Rating vs Ambient Temperature
(ASSR-4111-001E)
0.24
I_F = 10mA, 4-Layer Board
0.20
0.16
Safe
0.12
Operating
Area
0.08
0.04
0
-40 -20
0 20 40 60
TA - TEMPERATURE - °C
80 100
Figure 3. Maximum Output Current Rating vs Ambient Temperature
(ASSR-4111-001E) DC Connection
I_F = 10mA, 4-Layer Board
0.12
2-Channel
0.08
Safe
Operating
1-Channel
Area
0.04
0
-40 -20 0
20 40 60 80 100
TA - TEMPERATURE - °C
Figure 4. Maximum Output Current Rating vs Ambient Temperature,
ASSR-4120-002E and ASSR-4130-005E (Preliminary Product Release)
11