max5945caxt Maxim Integrated Products, Inc., max5945caxt Datasheet - Page 9
max5945caxt
Manufacturer Part Number
max5945caxt
Description
Max5945 Quad Network Power Controller For Power-over-lan
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX5945CAXT.pdf
(44 pages)
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(V
T
A
EE
= +25°C, unless otherwise noted.)
= -48V, V
DD
= +3.3V, AUTO = AGND = DGND = 0V, RESET = SHD_ = unconnected, R
_______________________________________________________________________________________
DETECTION WITH INVALID PD (33kΩ)
OVERCURRENT RESTART DELAY
DETECTION WITH INVALID PD
(25kΩ AND 10µF)
400ms/div
100ms/div
40ms/div
Quad Network Power Controller
Typical Operating Characteristics (continued)
MAX5945 toc18
MAX5945 toc20
MAX5945 toc22
(AGND - OUT)
20V/div
(AGND - OUT)
2V/div
(AGND - OUT)
5V/div
0V
I
200mA/div
0A
GATE
10V/div
V
0V
I
1mA/div
0V
I
1mA/div
0A
OUT
OUT
OUT
EE
DETECTION WITH INVALID PD (15kΩ)
WITH VALID PD (25kΩ AND 0.1µF)
for Power-Over-LAN
STARTUP IN MIDSPAN MODE
STARTUP WITH VALID PD
(25kΩ AND 0.1µF)
100ms/div
100ms/div
100ms/div
SENSE
= 0.5Ω, all registers = default setting,
MAX5945 toc19
MAX5945 toc21
MAX5945 toc23
(AGND - OUT)
20V/div
0V
I
100mA/div
GATE_
V
(AGND - OUT)
5V/div
0V
I
1mA/div
0A
(AGND - OUT)
20V/div
0V
I
100mA/div
0A
GATE_
10V/div
V
OUT
OUT
OUT
EE
EE
9
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