MAX5971B Maxim Integrated Products, MAX5971B Datasheet - Page 7

• Manufacturer Part Number: MAX5971B
• Description: PSE Controller
• Manufacturer: Maxim Integrated Products

(T
A
= +25°C, unless otherwise noted.)
2.7
2.6
2.5
2.4
2.3
32
MEASURED AT AGND
36
ANALOG SUPPLY CURRENT
vs. INPUT VOLTAGE
40
64.0
63.5
63.0
62.5
62.0
61.5
61.0
60.5
60.0
800
700
600
500
400
300
200
100
V
0
_______________________________________________________________________________________
AGND
-40
44
FOLDBACK CURRENT-LIMIT THRESHOLD
0
- V
EE
48
V
EE
(V)
-15
vs. OUTPUT VOLTAGE
10
OVERVOLTAGE LOCKOUT
vs. TEMPERATURE
52
TEMPERATURE (°C)
V
AGND
10
56
- V
20
Single-Port, 40W, IEEE 802.3af/at,
OUT
60
35
(V)
CLASS 0, 1, 2, 3
30
CLASS 4
60
2.7
2.6
2.5
2.4
2.3
-40
MEASURED AT AGND
85
40
ANALOG SUPPLY CURRENT
-15
vs. TEMPERATURE
TEMPERATURE (°C)
10
PSE Controller with I
Typical Operating Characteristics
35
1000
800
600
400
200
7.4
7.2
7.0
6.8
6.6
6.4
60
-40
-40
85
DC DISCONNECT THRESHOLD
INTERNAL FET RESISTANCE
-15
-15
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
TEMPERATURE (°C)
30.0
29.5
29.0
28.5
28.0
27.5
27.0
10
10
-40
35
35
V
EE
-15
UNDERVOLTAGE LOCKOUT
vs. TEMPERATURE
60
60
TEMPERATURE (°C)
10
85
85
35
60
2
C
85
7