MAX5971B Maxim Integrated Products, MAX5971B Datasheet - Page 18

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

Single-Port, 40W, IEEE 802.3af/at,
PSE Controller with I
Figure 1. Detection, Classification, and Port Power-Up Sequence
Figure 2. Detection, 2-Event Classification, and Port Power-Up Sequence
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-9.3V
-9.3V
-18V
-54V
-18V
-54V
-4V
-4V
0V
0V
V
V
OUT
OUT
80ms
80ms
t
DET(1)
150ms
150ms
t
DET(1)
2
C
t
DET(2)
150ms
150ms
t
DET(2)
t
t
CLASS(1)
CLASS
19ms
19ms
9ms
t
CLASS(2)
19ms
9ms
t
t