ASSR-1510 Datasheet, PDF (10/15 Pages) AVAGO TECHNOLOGIES LIMITED – Compact Solid-State Bi-directional Signal Switch

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=1A) 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.
1
IF = 10mA, 4-Layer Board
Derating curves are shown in Figures 1, 2, 3 and 4,
specifying the maximum output current allowable for
a given ambient temperature. The maximum allowable
output current and power dissipation are related by the
expression Rss=Po(max)/(Io(max))² from which Rss can
be calculated. 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-15xx 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 12 and 14. The changes of the turn
on and turn off time with ambient temperature are also
shown in Figures 13 and 15.
1
IF = 10mA, 4-Layer Board
0.8
Safe
Operating
0.6
Area
0.8
Safe
Operating
0.6
Area
0.4
0.4
0.2
0.2
0
-40 -20
0 20 40 60
TA - TEMPERATURE - °C
80 100
Figure 1. Maximum Output Current Rating vs Ambient Temperature
(ASSR-1510-003E)
0
-40 -20 0 20 40 60 80 100
T_A - TEMPERATURE - °C
Figure 2. Maximum Output Current Rating vs Ambient Temperature
(ASSR-1511-001E)
2
IF = 10mA, 4-Layer Board
1.5
Safe
Operating
Area
1
0.5
1.0
IF = 10mA, 4-Layer Board
1-Channel
0.8
2-Channel
0.6
Safe
Operating
0.4
Area
0.2
0
-40 -20
0 20 40 60
T_A - TEMPERATURE - °C
80 100
Figure 3. Maximum Output Current Rating vs Ambient Temperature
(ASSR-1511-001E DC Connection)
0
-40 -20
0 20 40 60
TA - TEMPERATURE - °C
80 100
Figure 4. Maximum Output Current Rating vs Ambient Temperature
(ASSR-1520-002E and ASSR-1530-005E)
10