MAX5945CAX+T Maxim Integrated Products, MAX5945CAX+T Datasheet - Page 5

• Manufacturer Part Number: MAX5945CAX+T
• Description: IC NETWORK PWR CTRL 36-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5945CAX+T

• Controller Type: Network Power Controller
• Interface: I²C
• Voltage - Supply: 3.3V
• Current - Supply: 4.2mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(AGND = +32V to +60V, V
values are at AGND = +48V, DGND = +48V, V
negative otherwise.)
Internal Input Pullup/Pulldown
Resistor
Open-Drain Output Low
Voltage
Open-Drain Leakage
TIMING
Startup Time
Fault Time
Port Turn-Off Time
Detection Time
Midspan Mode Detection
Delay
Classification Time
V
Restart Timer
Watchdog Clock Period
TIMING CHARACTERISTICS for 2-WIRE FAST MODE (Figures 5 and 6)
Serial Clock Frequency
Bus Free Time Between a
STOP and a START Condition
Hold Time for Start Condition
Low Period of the SCL Clock
High Period of the SCL Clock
EEUVLO
PARAMETER
Turn-On Delay
_______________________________________________________________________________________
EE
= 0V, V
SYMBOL
t
t
RESTART
t
t
t
HD, STA
START
FAULT
t
CLASS
t
R
t
t
t
t
DMID
t
f
HIGH
V
t
LOW
I
BUF
OFF
DET
DLY
SCL
WD
OL
DIN
OL
DD
to DGND = +3.3V, all voltages are referenced to V
Quad Network Power Controller
Pullup (pulldown) resistor to V
default level
I
Open-drain high impedance, V
Time during which a current limit set by V
is allowed, starts when the GATE_
is turned on (Note 8)
Maximum allowed time for an overcurrent
condition set by V
Minimum delay between any port turning off,
does not apply in the case of a reset
Maximum time allowed before detection
is completed
Time allowed for classification
Time V
thresholds before the device operates
Ti m e a p or t has to w ai t
b efor e tur ni ng on after an
over cur r ent faul t,
RS TR_E N b i t = hi g h
Rate of decrement of the watchdog timer
(Note 9)
(Note 9)
(Note 9)
(Note 9)
(Note 9)
SINK
DD
= (DGND + 3.3V), T
= 15mA
AGND
must be above the V
CONDITIONS
FLT_LIM
after startup (Note 8)
A
RSTR bits = 00
RSTR bits = 01
RSTR bits = 10
RSTR bits = 11
= +25°C. Currents are positive when entering the pin and
DD
O
for Power-Over-LAN
= 3.3V
(DGND) to set
EEUVLO
SU_LIM
EE
, unless otherwise noted. Typical
MIN
0.5
2.0
1.2
0.6
1.2
0.6
25
50
50
2
t
t
t
FAULT
FAULT
FAULT
TYP
0.75
16 x
32 x
64 x
164
50
60
60
0
MAX
320
400
0.4
1.0
2.4
75
70
70
40
2
4
UNITS
kHz
ms
ms
ms
ms
ms
ms
ms
ms
kΩ
µA
µs
µs
µs
µs
V
s
5