Typical operating characteristics (continued) – Rainbow Electronics MAX5940B User Manual
Page 5
MAX5940A/MAX5940B
IEEE 802.3af PD Interface Controller
For Power-Over-Ethernet
_______________________________________________________________________________________
5
PGOOD OUTPUT LOW VOLTAGE
vs. CURRENT
MAX5940A/B toc07
I
SINK
(mA)
V
PGOOD
(mV)
15
10
5
80
160
240
320
400
0
0
20
OUT LEAKAGE CURRENT
vs. TEMPERATURE
MAX5940A/B toc08
TEMPERATURE (
°C)
OUT LEAKAGE CURRENT (nA)
60
35
10
-15
4
8
12
16
20
0
-40
85
V
OUT
= 67V
INRUSH CURRENT CONTROL (V
IN
= 12V)
MAX5940A/B toc09
1ms/div
V
GATE
5V/div
I
INRUSH
100mA/div
V
OUT TO
V
EE
10V/div
PGOOD
10V/div
INRUSH CURRENT CONTROL (V
IN
= 48V)
MAX5940A/B toc10
2ms/div
V
GATE
5V/div
I
INRUSH
100mA/div
V
OUT TO
V
EE
50V/div
PGOOD
50V/div
INRUSH CURRENT CONTROL (V
IN
= 67V)
MAX5940A/B toc11
2ms/div
V
GATE
5V/div
I
INRUSH
100mA/div
V
OUT TO
V
EE
50V/div
PGOOD
50V/div
Typical Operating Characteristics (continued)
(V
IN
= (GND - V
EE
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
EE
(MAX5940B), T
A
= -40°C to +85°C. Typical values
are at T
A
= +25°C. All voltages are referenced to V
EE
, unless otherwise noted.)