MAX5941 Maxim, MAX5941 Datasheet - Page 6

• Manufacturer Part Number: MAX5941
• Description: IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices
• Manufacturer: Maxim

IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
(V
Typical values are at T
voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.)
6
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
400
350
300
250
200
150
100
IN
50
0
0
0
_______________________________________________________________________________________
DETECTION CURRENT vs. INPUT VOLTAGE
= (GND - V
1
0
0
R
GND = V+ = V- = OUT
DISC
2
PGOOD OUTPUT LOW VOLTAGE
= 25.5kΩ
3
2
4
vs. INPUT VOLTAGE
OFFSET CURRENT
4
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
EE
vs. CURRENT
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
5
4
8
I
SINK
6
(mA)
A
12
7
6
= +25°C. All voltages are referenced to V
8
9
16
8
10
11
10
20
1.010
1.008
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
40
35
30
25
20
15
10
20
16
12
5
0
8
4
0
-40
-40
10
UVLO = V
V
OUT
CLASSIFICATION CURRENT
-15
= 67V
-15
OUT LEAKAGE CURRENT
EE
15
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
NORMALIZED UVLO
vs. INPUT VOLTAGE
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
10
10
20
EE
35
35
(for graphs 1–11 in the Typical Operating Characteristics), all
Typical Operating Characteristics
25
60
60
EE
85
30
85
, V
DD
= 13V, NDRV floating, T
3.5
3.0
2.5
2.0
1.5
1.0
0.5
200
180
160
140
120
100
80
60
40
20
0
0
0
0
EFFECTIVE DIFFERENTIAL INPUT
RESISTANCE vs. INPUT VOLTAGE
PGOOD OUTPUT LOW VOLTAGE
INRUSH CURRENT CONTROL
4
INPUT VOLTAGE (V)
5
vs. CURRENT
(V
8
I
SINK
IN
1ms/div
= 12V)
(mA)
A
12
= T
10
MIN
16
MAX5941toc09
to T
MAX
15
20
V
5V/div
I
100mA/div
V
10V/div
P
10V/div
.
INRUSH
GATE
OUT
GOOD