Quad PCI Express, Hot-Plug Controllers
6  _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
12VIN
= V
12S_+
= 12V, V
3.3S_+
= V
3.3S_-
= V
3.3AUXIN
= V
ON_
= V
AUXON_
= V
FON_
= 3.3V, PWRGD_ = FAULT_ = PORADJ = TIM =
OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the Typical Application Circuit.)
12V UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE
TEMPERATURE (癈)
60
35
-15
10
9.85
9.90
9.95
10.00
10.05
10.10
10.15
10.20
9.80
-40
85
3.3VAUXON UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE
TEMPERATURE (癈)
60
35
10
-15
2.54
2.58
2.62
2.66
2.70
2.52
2.56
2.60
2.64
2.68
2.50
-40
85
12V TURN-ON/OFF TIME
MAX5959 toc12
40ms/div
12V OUTPUT
 VOLTAGE
12G_
ON_
PWRGD_
0V/div
0V/div
5V/div
5V/div
3.3V TURN-ON/OFF TIME
MAX5959 toc13
40ms/div
3.3V OUTPUT
5V/div
3.3G_
10V/div
ON_
5V/div
PWRGD_
5V/div
3.3V AUXILIARY TURN-ON/OFF TIME
MAX5959 toc14
40ms/div
3.3AUXO_OUTPUT
VOLTAGE
2V/div
AUXON_
2V/div
PWRGD_
2V/div
TURN-ON DELAY 3.3V OUTPUT AND
3.3V AUXILIARY OUTPUT
MAX5959 toc15
4ms/div
5V/div
5V/div
5V/div
5V/div
10V/div
3.3VAUXO_
OUTPUT VOLTAGE
3.3 OUTPUT VOLTAGE
3.3 INPUT,
3.3VAUXIN
3.3G_
PWRGD
FAULT CONDITION ON 12V MAIN OUTPUT
(AUTORESTART OPTION)
MAX5959 toc16
12G_
20V/div
0A
0V
0V
0V
FAULT_
5V/div
12V OUTPUT CURRENT
5A/div
100ms/div
12V OUTPUT VOLTAGE
10V/div
t
RESTART
R
LOAD
 STEP TO 1.5?/DIV>
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