Rainbow Electronics MAX5958 User Manual
Page 2
MAX5957/MAX5958
Triple PCI Express, Hot-Plug Controllers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
12VIN
= V
12S_+
= 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_ = 12G_ = 3.3G_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND, T
A
= T
J
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= T
J
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(All voltages referenced to GND, unless otherwise noted.)
12VIN......................................................................-0.3V to +14V
12G_ ..........................................................-0.3V to (V
12VIN
+ 6V)
12S_+, 12S_-, 3.3G_ ..............................-0.3V to (V
12VIN
+ 0.3V)
3.3VAUXIN, ON_, FAULT_, PWRGD_.......................-0.3V to +6V
PGND ....................................................................-0.3V to +0.3V
All Other Pins ..................................-0.3V to (V
3.3VAUXIN
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
56-Pin Thin QFN (derate 40mW/°C above +70°C) .....3200mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
12V SUPPLY (MAIN)
12V Supply Input-Voltage Range
V
12VIN
10.8
12
13.2
V
V
12VIN
rising
9.5
10
10.5
12V Undervoltage Lockout
V
12UVLO
Hysteresis
0.1
V
12V Undervoltage Lockout
Deglitch Time
t
DEG,UVLO
V
12IN
falling below V
12UVLO
to UVLO
assertion
30
µs
12V Supply Current
I
12VIN
V
12VIN
= 13.2V
1
2.5
mA
12VIN CONTROL
12VIN Current-Limit Threshold
(V
12S+
- V
12S-
)
V
12ILIM
49
54
59
mV
12G_ Gate Charge Current
I
12G, CHG
V
12G_
= GND
4
5
6
µA
Normal turn-off, ON_ = GND,
V
12G_
= 2V
50
150
250
µA
12G_ Gate Discharge Current
I
12G_, DIS
Output short-circuit condition, strong
gate pulldown to regulation,
(V
12S+
- V
12S-
)
≥ 1V, V
12G_
= 5V
60
120
200
mA
12G_ Gate High Voltage
(V
12G_
- V
12VIN
)
V
12G, H
I
12G
_ = 1µA
4.8
5.3
5.8
V
12G_ Threshold Voltage for
PWRGD_ Assertion
V
PGTH12
Referred to V
12VIN
, I
12G_
= 1µA
(Note 2)
3.0
4.0
4.8
V
12S_- Input Bias Current
1
µA
12S_+ Input Bias Current
10
30
µA
3.3V SUPPLY (MAIN)
3.3V Supply Voltage Range
V
3.3S_+
3.0
3.3
3.6
V
3.3SA+ rising
2.50
2.65
2.78
V
Undervoltage Lockout (Note 3)
Hysteresis
30
mV