Datasheet

MAX5922
+48V, Single-Port Network Power Switch
For Power-Over-LAN
8 _______________________________________________________________________________________
STARTUP WITH INVALID
PD (15kΩ)
MAX5922 toc22
100ms/div
0V
0V
5V/div
0A
250µA/div
0V
2V/div
V
OUT
POK
EN
STARTUP WITH INVALID
PD (33kΩ)
MAX5922 toc23
40ms/div
0V
0V
5V/div
0A
250µA/div
0V
2V/div
V
OUT
I
OUT
POK
EN
STARTUP WITH OUTPUT
SHORTED TO AGND
MAX5922 toc24
100ms/div
0V
0V
5V/div
5V/div
0A
500µA/div
0V
2V/div
V
OUT
I
OUT
POK
EN
STARTUP WITH MIDSPAN MODE
(DCA = V
DIG
, VALID PD (25kΩ AND 0.1µF))
MAX5922 toc25
100ms/div
0V
0V
5V/div
5V/div
0V
500µA/div
0A
20V/div
V
OUT
I
OUT
POK
EN
STARTUP WITH MIDSPAN MODE
(DCA = V
DIG
, INVALID PD (15kΩ))
MAX5922 toc26
400ms/div
0V
0V
5V/div
0A
250µA/div
0V
2V/div
V
OUT
I
OUT
POK
EN
STARTUP WITH MIDSPAN MODE
(DCA = V
DIG,
INVALID PD (33kΩ))
MAX5922 toc27
400ms/div
0V
0V
5V/div
0A
250µA/div
0V
2V/div
V
OUT
I
OUT
POK
EN
Typical Operating Characteristics (continued)
(MAX5922A, V
IN
= 48V, V
DIG
, EN, LATCH, CLASS, and ZC_EN = 3.3V, DCA, AGND_S = AGND = DGND = 0V, R
SENSE
= 0.5Ω ±1%,
UVLO floating, R
RCL
= 150kΩ, R
RDT
= 18.2kΩ, T
A
= +25°C, unless otherwise noted.)