MAX5952 MAXIM [Maxim Integrated Products], MAX5952 Datasheet - Page 6

• Manufacturer Part Number: MAX5952
• Description: High-Power, Quad, PSE Controller for Power-Over-Ethernet
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(AGND = 32V to 60V, V
AGND = +48V, DGND = +48V, V
(Note 2)
High-Power, Quad, PSE Controller
for Power-Over-Ethernet
6
DIGITAL INPUTS/OUTPUTS (Referred to DGND)
Digital Input Low
Digital Input High
Internal Input Pullup/Pulldown
Resistor
O p en- D r ai n O utp ut Low V ol tag e
Digital Input Leakage
Open-Drain Leakage
TIMING
Startup Time
Fault Time
Port Turn-Off Time
Detection Reset Time
Detection Time
M i d sp an M od e D etecti on D el ay
Classification Time
V
Restart Timer
Watchdog Clock Period
ADC PERFORMANCE
Resolution
Range
LSB Step Size
Integral Nonlinearity (Relative)
EEUVLO
_______________________________________________________________________________________
PARAMETER
Turn-On Delay
EE
= 0V, V
DD
DD
SYMBOL
t
= (DGND + 3.3V), T
RESTART
to DGND = +3.3V, all voltages are referenced to V
t
t
t
t
CLASS
START
FAULT
R
t
t
DMID
t
V
t
INL
V
I
I
V
OFF
DET
DLY
WD
DIN
DL
OL
OL
IH
IL
turned on (Note 5)
Pullup (pulldown) resistor to V
set default level
I
Input connected to the pull voltage
Open-drain high impedance, V
Time during which a current limit set by
V
Maximum allowed time for an overcurrent
condition set by V
Minimum delay between any port turning off,
does not apply in case of a reset
Time allowed for the port voltage to reset
before detection starts
Maximum time allowed before detection is
completed
Time allowed for classification
Time V
thresholds before the device operates
Time a port has to wait
before turning on after an
overcurrent fault,
RSTR_EN_ bits = high
Rate of decrement of the watchdog timer
SINK
SU_LIM
= 15mA
AGND
A
is allowed, starts when the GATE_ is
= +25°C. Currents are positive when entering the pin and negative otherwise.)
must be above the V
CONDITIONS
FLT_LIM
after startup (Note 5)
RSTR bits = 00
RSTR bits = 01
RSTR bits = 10
RSTR bits = 11
DD
O
= 3.3V
(DGND) to
EEUVLO
EE
, unless otherwise noted. Typical values are at
MIN
2.4
2.0
25
50
50
2
t
t
t
FAULT
FAULT
FAULT
TYP
16 x
32 x
64 x
0.51
164
0.5
0.5
50
60
60
80
19
0
9
1
MAX
330
0.9
0.4
2.4
75
70
70
90
23
2
2
4
UNITS
LSB
Bits
mV
ms
ms
ms
ms
ms
ms
ms
ms
ms
kΩ
µA
µA
V
V
V
V
s