Rainbow Electronics MAX5969B - Manual (Page 6)

IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with Integrated Power MOSFET
MAX5969A/MAX5969B
6 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V IN = (V DD - V SS ) = 54V, R DET = 24.9kω, R CLS = 615ω. RTN, WAD, PG, and 2EC unconnected; all voltages are referenced to V SS. )
INRUSH CONTROL WAVEFORM WITH
TYPE 2 CLASSIFICATION
MAX5969A toc10
0V
0V
0A
0V
V RTN
50V/div
I RTN
100mA/div
V DD
50V/div
V 2EC
50V/div
200 µs/div
USING TYPICAL APPLICATION CIRCUIT
2EC PULLED UP TO V
DD WITH 10kI
ENTERING POWER MODE WITH
TYPE 2 CLASSIFICATION
MAX5969A toc11
V PG
10V/div 0V
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