MAX5940AESA+ Maxim Integrated Products, MAX5940AESA+ Datasheet - Page 2

• Manufacturer Part Number: MAX5940AESA+
• Description: IC IEEE 802.3AF PD INTFC 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX5940AESA+

• Controller Type: Powered Device Interface Controller (PD)
• Interface: IEEE 802.3af
• Voltage - Supply: 48V
• Current - Supply: 1mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
(All voltages are referenced to V
GND (MAX5940A/MAX5940B) ...............................-0.3V to +80V
GND (MAX5940C/MAX5940D)...............................-0.3V to +90V
OUT, PGOOD ...........................................-0.3V to (GND + 0.3V)
RCLASS, GATE ......................................................-0.3V to +12V
UVLO ........................................................................-0.3V to +8V
PGOOD to OUT.........................................-0.3V to (GND + 0.3V)
Maximum Input/Output Current (continuous)
IEEE 802.3af PD Interface Controller
For Power-Over-Ethernet
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
Typical values are at T
2
DETECTION MODE
Input Offset Current (Note 2)
Effective Differential Input
Resistance (Note 3)
CLASSIFICATION MODE
Classification Current Turn-Off
Threshold (Note 4)
Classification Current (Notes 5, 6)
POWER MODE
Operating Supply Voltage
Operating Supply Current
Default Power Turn-On Voltage
Default Power Turn-Off Voltage
Default Power Turn-On/Off
Hysteresis
External UVLO Programming
Range
UVLO External Reference Voltage
UVLO External Reference Voltage
Hysteresis
UVLO Bias Current
IN
OUT to V
_______________________________________________________________________________________
= (GND - V
EE
PARAMETER
...................................................................500mA
EE
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
A
= +25°C. All voltages are referenced to V
EE
, unless otherwise noted.)
V
V
V
SYMBOL
V
UVLO, OFF
REF, UVLO
I
UVLO, ON
V
OFFSET
TH,CLSS
I
V
I
CLASS
HYST
UVLO
UVLO
HYST,
V
IN,EX
dR
I
IN
IN
V
V
OUT = PGOOD = GND
V
V
20V, R
25.5kΩ
V
Measure at GND, not including R
V
V
MAX5940B/MAX5940D
MAX5940A/MAX5940C
MAX5940B/MAX5940D, UVLO = V
Set UVLO externally (MAX5940B/
MAX5940D only) (Note 7)
Ratio to V
UVLO = 2.460V
IN
IN
IN
IN
IN
IN
IN
= 1.4V to 10.1V
= 1.4V up to 10.1V with 1V step,
rising
= 12.6V to
= (GND - V
increasing
decreasing, UVLO = V
DISC
REF,UVLO
=
CONDITIONS
EE
EE
Class 0, R
Class 1, R
Class 2, R
Class 3, R
Class 4, R
, unless otherwise noted.) (Note 1)
MAX5940A/MAX5940C
MAX5940B/MAX5940D,
UVLO = V
)
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) ................................+300°C
GND, RCLASS to V
UVLO, PGOOD, PGOOD to V
GATE to V
8-Pin SO (derate 5.9mW/°C above +70°C)..................470mW
CL
CL
CL
CL
CL
EE for
EE
= 10kΩ
= 732Ω
= 392Ω
= 255Ω
= 178Ω
EE
EE
DISC
....................................................................80mA
EE
, T
A
=
EE
-40°C to +85°C, unless otherwise noted.
.....................................................70mA
17.29
26.45
2.400
MIN
20.8
9.17
36.6
34.3
37.4
19.2
-1.5
550
4.2
7.4
30
12
0
EE
A
= +70°C)
.....................................20mA
2.460
TYP
21.8
35.4
38.6
0.4
20
11.83
19.71
29.55
2.522
MAX
22.5
41.4
36.6
20.9
+1.5
39.9
10
67
67
2
1
UNITS
mA
mA
kΩ
µA
µA
%
V
V
V
V
V
V
V