max5969a Maxim Integrated Products, Inc., max5969a Datasheet - Page 3

• Manufacturer Part Number: max5969a
• Description: Ieee 802.3af/at-compliant, Powered Device Interface Controllers With Integrated Power Mosfet
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(V
unless otherwise noted. T
IEEE 802.3af/at-Compliant, Powered Device Interface
V
V
V
(Note 7)
V
Inrush to Operating Mode
Delay
Isolation Power MOSFET
On-Resistance
RTN Leakage Current
CURRENT LIMIT
Inrush Current Limit
Current Limit During Normal
Operation
Foldback Threshold
LOGIC
WAD Detection Threshold
WAD Detection Threshold
Hysteresis
WAD Input Current
2EC Sink Current
2EC Off-Leakage Current
PG Sink Current
PG Off-Leakage Current
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
IN
IN
IN
IN
IN
= (V
Turn-On Voltage
Turn-Off Voltage
Turn-On/-Off Hysteresis
Deglitch Time
DD
PARAMETER
- V
SS
) = 48V, R
_______________________________________________________________________________________
A
Controllers with
DET
= T
J
= 24.9kω, R
= -40
V
V
HYST_UVLO
SYMBOL
I
I
t
R
WAD-LKG
RTN_LKG
I
OFF_DLY
WAD-REF
t
INRUSH
ON_ISO
DELAY
V
N
V
I
T
LIM
C to +85
OFF
ON
SD
CLS
N
= 615ω. RTN, WAD, PG, and 2EC unconnected, all voltages are referenced to V
C, unless otherwise noted. Typical values are at T
V
V
MAX5969A
MAX5969B
V
t
after entering into power mode
I
V
During initial turn-on period,
V
After inrush completed,
V
V
V
to RTN)
V
unconnected
V
V
unconnected
V
V
period
V
T
T
DELAY
RTN
J
J
IN
IN
IN
RTN
RTN
RTN
RTN
WAD
WAD
WAD
2EC
2EC
RTN
PG
rising
falling
rising
falling
falling from 40V to 20V (Note 8)
= 48V
= 600mA
(Note 9)
= 3.5V (referenced to RTN), V
= 48V
= 12.5V to 30V
= 1.5V
= 1V
= 1.5V, V
rising, V
falling, V
= 10V (referenced to RTN)
= minimum PG current pulse width
CONDITIONS
IN
RTN
PG
= 14V to 48V (referenced
Integrated Power MOSFET
= 0.8V, during inrush
T
T
T
= 0V, V
J
J
J
= +25NC
= +85NC
= +125NC
MAX5969A
MAX5969B
SS
SS
34.3
37.2
MIN
720
125
4.2
7.3
30
30
80
90
13
8
1
A
= +25
120
0.725
+140
TYP
35.4
38.6
0.65
135
800
230
0.5
0.8
1.5
96
28
9
N
C.) (Note 3)
MAX
36.6
16.5
2.25
112
180
880
375
0.7
3.5
40
10
10
1
1
1
UNITS
mA
mA
mA
ms
FA
FA
FA
FA
FA
NC
NC
Fs
I
V
V
V
V
V
SS,
3