Dual PCI 2.2 Hot-Swap Controllers
8  _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
+12VIN
= +12V, V
3.3VAUXIN
= +3.3V, V
-12VIN
= -12V, V
5V
= +5V, V
3.3V
= +3.3V, R
5VSEN_
= 0.005&, R
3.3VSEN_
= 0.005&, C
3.3VO_
=
40ms/div
MAIN SUPPLY
TURN-OFF WAVEFORMS
ON_
5V/div
+12VO_
10V/div
MAX5915 toc36
PGOOD_
5V/div
5VO_
5V/div
200祍/div
TURN-ON DELAY
+12VIN
10V/div
3.3VAUXIN_
2V/div
MAX5915 toc35
3.3VAUXO_
2V/div
+12VO_
10V/div
ON_ = 5V
AUXON_ = 5V
10ms/div
AUXILIARY SUPPLY
TURN-ON WAVEFORMS
AUXON_
5V/div
3.3VAUXO_
2V/div
MAX5915 toc34
PGOOD_
 5V/div
ON_ = 5.0V
10ms/div
MAIN SUPPLY
TURN-ON WAVEFORMS
ON_
5V/div
12VO_
10V/div
MAX5915 toc33
PGOOD_
5V/div
5VO_
5V/div
AUXON_ = 5V
5VO_ SENSE RESISTOR VOLTAGE
 vs. TEMPERATURE
TEMPERATURE (癈)
60
35
-15
10
24
22
20
26
28
34
36
38
40
-40
85
32
30
DURING CURRENT
LIMIT
3.3V AUXILIARY CURRENT
FOLDBACK vs. TEMPERATURE
TEMPERATURE (癈)
60
35
-15
10
475
550
625
700
775
850
925
-40
85
3.3VO_ SENSE RESISTOR VOLTAGE
 vs. TEMPERATURE
TEMPERATURE (癈)
60
35
10
-15
37
39
41
43
45
35
-40
85
47
49
DURING CURRENT LIMIT
-12V OUTPUT CURRENT
FOLDBACK vs. TEMPERATURE
TEMPERATURE (癈)
60
35
-15
10
130
150
170
190
210
230
250
-40
85
TEMPERATURE (癈)
60
35
10
-15
0.7
0.8
0.9
1.0
1.1
1.2
0.6
-40
85
+12V OUTPUT CURRENT
FOLDBACK vs. TEMPERATURE
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