ISL6161 Datasheet, PDF (7/11 Pages) Intersil Corporation – Dual Power Distribution Controller

ISL6161
Open load detection can be accomplished by monitoring
the ISEN pins. Although gated off, the external FET I_DSS will
cause the ISEN pin to float above ground to some voltage
when there is no attached load. If this is not desired, 5k
resistors from the xISEN pins to ground will prevent the
outputs from floating when the external switch FETs are
disabled and the outputs are open.
Typical Performance Curves
8.4
8.2
8.0
7.8
7.6
7.4
7.2
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 2. SUPPLY CURRENT
For PCI-Express applications, the ISL6161 and the
ISL6118 provide the fundamental hotswap function for the
+12V and +3.3V main rails and the +3.3V aux respectively,
as shown in the “PCI-Express Implementation of ISL6161
and ISL6118” on page 10.
105
104
103
102
-40
-30 -20 -10 0 10 20 30 40 50 60
TEMPERATURE (°C)
FIGURE 3. R_ILIM SOURCE CURRENT
70 80
10.7
10.6
10.5
10.4
10.3
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 4. C_TIM CURRENT SOURCE
2.04
2.02
2.00
1.98
1.96
1.94
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 5. C_TIM OC VOLTAGE THRESHOLD
7
FN9104.4
October 2, 2008