MAX5971BETI+ Maxim Integrated Products, MAX5971BETI+ Datasheet - Page 5

• Manufacturer Part Number: MAX5971BETI+
• Description: Hot Swap & Power Distribution IEEE 802.3af/at PSE Controller
• Manufacturer: Maxim Integrated Products

Specifications of MAX5971BETI+

• Lead Free Status / Rohs Status: Details

ELECTRICAL CHARACTERISTICS (continued)
(V
V
Classification Current Thresholds
Mark Event Voltage
Mark Event Current Limit
DIGITAL INPUTS/OUTPUTS (Voltages Referenced to V
Digital Input Low
Digital Input High
Internal Input Pullup Current
Open-Drain Output Low Voltage
Open-Drain Leakage
LED Output Low Voltage
LED Output Leakage
PWM Frequency
PWM Duty Cycle
TIMING
Startup Time
Fault Time
Detection Reset Time
Detection Time
Midspan Mode Detection Delay
Classification Time
Mark Event Time
V
Restart Timer
Watchdog Clock Period
AGND
AGND
EEUVLO
- V
- V
EE
PARAMETER
Turn-On Delay
EE
= +54V, T
= 32V to 60V, T
_______________________________________________________________________________________
A
= +25NC. Currents are positive when entering the pin and negative otherwise.) (Note 2)
A
= -40NC to +85NC, all voltages are referenced to V
I
I
V
SYMBOL
MARK_LIM
LED_LEAK
t
RESTART
LED_LOW
V
t
t
t
Single-Port, 40W, IEEE 802.3af/at,
t
CLASS
START
FAULT
t
DMID
t
MARK
V
V
t
I
V
I
I
DET
DLY
ME
CL
PU
OL
OL
IH
IL
Classification current
thresholds between
classes
V
V
current through DET
Pullup current to internal digital supply to
set default values
I
Open-drain high impedance
I
PWM disabled, shutdown mode,
V
Time during which a current limit set to
420mA is allowed, starts when power is
turned on (Note 8)
Maximum allowed time for an overcurrent
condition set by I
Time allowed for the port voltage to reset
before detection starts
Maximum time allowed before detection is
completed
Time allowed for classification
Time allowed for mark event
Time V
thresholds before the device operates
Time the device waits before turning on
after an overcurrent fault (Note 8)
Rate of decrement of the watchdog time
SINK
LED
AGND
DET
LED
= 10mA, PWM disabled, port power-on
= V
= 10mA
= 60V
AGND
- V
EE
AGND
DET
)
must be above the V
CONDITIONS
during mark event
during mark event measure
CUT
PSE Controller with I
after startup (Note 8)
Class 0, Class 1
Class 1, Class 2
Class 2, Class 3
Class 3, Class 4
Class 4 upper limit
(Note 7)
EE
EEUVLO
, unless otherwise noted. Typical values are at
13.0
MIN
5.5
2.4
21
31
45
55
50
50
8
3
2
7
t
FAULT
TYP
14.5
6.25
16 x
164
6.5
2.2
5.2
23
33
48
25
60
60
80
19
5
9
MAX
16.0
330
7.5
0.8
0.4
0.8
2.4
25
35
51
10
80
10
70
70
90
23
11
7
2
UNITS
kHz
mA
mA
2
FA
FA
FA
ms
ms
ms
ms
ms
ms
ms
ms
ms
%
V
V
V
V
V
s
C
5