IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with Integrated Power MOSFET
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= (V
DD
- V
SS
) = 48V, R
DET
= 24.9k? R
CLS
= 615? and R
SL
= 60.4k? RTN, WAD, PG, 2EC, WK, and ULP unconnected, all
voltages are referenced to V
SS,
unless otherwise noted. T
A
= T
J
= -40NC to +85NC, unless otherwise noted. Typical values are at
T
A
= +25NC.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Turn-On Voltage
V
ON
V
IN
rising
34.3
35.4
36.6
V
V
IN
Turn-Off Voltage
V
OFF
V
IN
falling
30
V
V
IN
Turn-On/-Off Hysteresis
V
HYST_
UVLO
(Note 7)
4.2
V
V
IN
Deglitch Time
t
OFF_DLY
V
IN
falling from 40V to 20V (Note 8)
30
120
Fs
Inrush to Operating Mode
Delay
t
DELAY
t
DELAY
= minimum PG current pulse width
after entering into power mode
87
96
105
ms
Isolation Power MOSFET
On-Resistance
R
ON_ISO
I
RTN
= 600mA
T
J
= +25NC
0.5
0.7
I
T
J
= +85NC
0.65
1
T
J
= +125NC
0.8
RTN Leakage Current
I
RTN_LKG
V
RTN
= 12.5V to 30V
10
FA
CURRENT LIMIT
Inrush Current Limit
I
INRUSH
During initial turn-on period,
V
RTN
= 1.5V
90
135
180
mA
Current Limit During Normal
Operation
I
LIM
After inrush completed,
V
RTN
= 1V
720
800
880
mA
Foldback Threshold
V
RTN
(Note 9)
13
16.5
V
LOGIC
WAD Detection Threshold
V
WAD-REF
V
WAD
rising, V
IN
= 14V to 48V (referenced
to RTN)
8
9
10
V
WAD Detection Threshold
Hysteresis
V
WAD
falling, V
RTN
= 0V, V
SS
unconnected
0.725
V
WAD Input Current
I
WAD-LKG
V
WAD
= 10V (referenced to RTN)
3.5
FA
2EC Sink Current
V
2EC
= 3.5V (referenced to RTN), V
SS
disconnected
1
1.5
2.25
mA
2EC Off-Leakage Current
V
2EC
= 48V
1
FA
PG Sink Current
V
RTN
= 1.5V, V
PG
= 0.8V, during inrush
period
125
230
375
FA
PG Off-Leakage Current
V
PG
= 60V
1
FA
SLEEP MODE
WK and ULP Logic Threshold
V
TH
V
WK
falling and V
ULP
rising and falling
1.5
3
V
SL Logic Threshold
Falling
0.75
0.8
0.85
V
SL Current
R
SL
= 0I
140
FA
LED Current Amplitude
I
LED
R
SL
= 60.4kI, V
LED
= 3.5V
10
10.5
11.5
mA
R
SL
= 30.2kI, V
LED
= 3.75V
19.5
20.9
22.5
R
SL
= 30.2kI, V
LED
= 4V
19
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