MAX5942BCSE Maxim Integrated, MAX5942BCSE Datasheet - Page 6

• Manufacturer Part Number: MAX5942BCSE
• Description: Power Switch ICs - POE / LAN
• Manufacturer: Maxim Integrated

IEEE 802.3af 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
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
400
350
300
250
200
150
100
IN
50
0
0
0
_______________________________________________________________________________________
= (GND - V
1
0
0
R
GND = V+ = V- = OUT
2
DISC
PGOOD OUTPUT LOW VOLTAGE
DETECTION CURRENT vs.
= 25.5kΩ
3
4
2
vs. INPUT VOLTAGE
OFFSET CURRENT
4
INPUT VOLTAGE (V)
INPUT VOLTAGE
INPUT VOLTAGE (V)
EE
vs. CURRENT
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
5
8
4
I
SINK
6
(mA)
A
12
7
= +25°C. All voltages are referenced to V
6
8
16
9
8
10
11
20
10
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
10
-40
-40
UVLO = V
V
OUT
CLASSIFICATION CURRENT
-15
-15
= 67V
OUT LEAKAGE CURRENT
15
EE
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
vs. INPUT VOLTAGE
NORMALIZED UVLO
vs. TEMPERATURE
vs. TEMPERATURE
INPUT VOLTAGE (V)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
10
10
20
EE
Typical Operating Characteristics
35
35
(for graphs 1–11 in the Typical Operating Characteristics); all
25
60
60
EE
30
85
85
, V
DD
= 13V, NDRV floating, T
200
180
160
140
120
100
3.5
3.0
2.5
2.0
1.5
1.0
0.5
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
= T
12
10
MIN
MAX5942A/B toc09
16
to T
MAX
15
20
.
V
5V/div
I
100mA/div
V
10V/div
P
10V/div
INRUSH
GATE
OUT
GOOD