Datasheet

IEEE 802.3af/at-Compliant, Powered Device Interface
Controller with Integrated Power MOSFET
MAX5969D
6 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
IN
= (V
DD
- V
SS
) = 54V, R
DET
= 24.9kω, R
CLS
= 615ω, and R
SL
= 60.4kω. RTN, WAD, PG, and 2EC unconnected; all voltages are
referenced to V
SS.
)
INRUSH CURRENT LIMIT
vs. RTN VOLTAGE
MAX5969D toc08
V
RTN
(V)
INRUSH CURRENT LIMIT (mA)
5040302010
70
90
110
130
150
50
06
0
INRUSH CONTROL WAVEFORM WITH
TYPE 2 CLASSIFICATION
MAX5969D toc10
0V
0V
0V
0A
0V
V
RTN
50V/div
I
RTN
100mA/div
V
DD
50V/div
V
PG
10V/div
V
2EC
40V/div
20ms/div
USING TYPICAL APPLICATION CIRCUIT
2EC PULLED UP TO V
DD
WITH 10kI
NORMAL OPERATION CURRENT LIMIT
vs. RTN VOLTAGE
MAX5969D toc09
V
RTN
(V)
CURRENT LIMIT (mA)
504010 20 30
200
300
400
500
600
700
800
900
100
06
0
INRUSH CONTROL WAVEFORM WITH
TYPE 2 CLASSIFICATION
MAX5969D toc11
V
PG
10V/div0V
0V
0V
0A
0V
V
RTN
50V/div
I
RTN
200mA/div
V
DD
50V/div
20ms/div
V
2EC
40V/div
USING TYPICAL APPLICATION CIRCUIT
2EC PULLED UP TO V
DD
WITH 10kI