MAX5957 MAXIM [Maxim Integrated Products], MAX5957 Datasheet - Page 4

• Manufacturer Part Number: MAX5957
• Description: Triple PCI Express, Hot-Plug Controllers
• Manufacturer: MAXIM [Maxim Integrated Products]

Triple PCI Express, Hot-Plug Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V
TIM = OUTPUT_ = 12G_ = 3.3G_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND, T
noted. Typical values are at T
Note 1: All devices are 100% production tested at T
Note 2: PWRGD_ asserts a time t
Note 3: The UVLO for the 3.3V supply is sensed at 3.3S_+.
Note 4: This is the time that ON_ or AUXON_ must stay low when resetting a fault condition.
4
PRES-DET_ High-to-Low Deglitch
Time
PWRGD_ Power-On Reset
Deglitch Time (Note 2)
PWRGD_ Low-to-High Deglitch
Time
PWRGD_, FAULT_ Output Low
Voltage
PWRGD_, FAULT_ Output High
Leakage Current
FAULT_ Timeout
FAULT_ Timeout During Startup
Autorestart Delay Time
Fault Reset Minimum Pulse Width
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
OUT_ Debounce Time
OUT_ Voltage High
OUT_ Voltage Low
12VIN
_______________________________________________________________________________________
= V
PARAMETER
12S_+
= V
12S_-
= 12V, V
A
= T
POR_HL
J
3.3S_+
= +25°C.) (Note 1)
SYMBOL
t
t
t
RESTART
POR_HL
POR_LH
t
t
after V
=V
FAULT
RESET
t
t
DEG
DBC
t
t
SU
SD
3.3S_-
PGTH12,
= V
A
3.3AUXIN
V
PORADJ = unconnected
R
R
R
I
I
PWRGD_, FAULT_ = 5.5V
TIM = open
R
R
R
(Note 4)
T
I
I
= +25°C. Limits over temperature are guaranteed by design.
SINK
SINK
SOURCE
SINK
J
PORADJ
PORADJ
PORADJ
PORADJ
TIM
TIM
TIM
V
rising
PGTH3.3,
= 15kΩ
= 120kΩ
= 300kΩ
= 2mA
= 30mA
= 2mA
= V
= 2mA
= GND
= 20kΩ
= 100kΩ
= 200kΩ
ON_
and V
CONDITIONS
= V
PGTH3.3AUX
AUXON_
= V
conditions are met.
FON_
A
= T
= 3.3V, PWRGD_ = FAULT_ = PORADJ =
J
V
- 0.3
= -40°C to +85°C, unless otherwise
3.3 AU X IN
MIN
145
5.5
1.4
2.6
90
35
12
3
t
t
FAULT
FAULT
TYP
64 x
160
265
530
100
150
2.6
2 x
4.4
55
11
22
53
20
5
4
V
3.3 AU X IN
MAX
250
380
0.1
0.8
3.8
6.2
0.4
75
17
32
7
1
1
UNITS
ms
ms
ms
ms
ms
ms
µA
µs
µs
µs
°C
V
V
V