MAX5945 MAXIM [Maxim Integrated Products], MAX5945 Datasheet - Page 7

• Manufacturer Part Number: MAX5945
• Description: Quad Network Power Controller for Power-Over-LAN
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
T
A
EE
= +25°C, unless otherwise noted.)
10.5
10.4
10.3
10.2
10.1
10.0
9.9
9.8
9.7
9.6
9.5
= -48V, V
6
5
4
3
2
1
0
-40
1.8
MEASURED AT V
2.2
DIGITAL SUPPLY CURRENT
-15
DD
2.6
vs. INPUT VOLTAGE
vs. TEMPERATURE
GATE OVERDRIVE
= +3.3V, AUTO = AGND = DGND = 0V, RESET = SHD_ = unconnected, R
TEMPERATURE (°C)
INPUT VOLTAGE (V)
3.0
DD
10
_______________________________________________________________________________________
3.4
300
250
200
150
100
35
50
3.8
0
0
4.2
THRESHOLD vs. OUTPUT VOLTAGE
60
FOLDBACK CURRENT-LIMIT
4.6
10
5.0
85
V
OUT
20
Quad Network Power Controller
- V
EE
30.0
29.5
29.0
28.5
28.0
27.5
27.0
200
195
190
185
180
175
170
Typical Operating Characteristics (continued)
(V)
30
-40
-40
V
40
EE
-15
-15
SENSE TRIP VOLTAGE
UNDERVOLTAGE LOCKOUT
vs. TEMPERATURE
vs. TEMPERATURE
50
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
35
35
5
4
3
2
1
0
-40
for Power-Over-LAN
60
60
THRESHOLD vs. TEMPERATURE
ZERO-CURRENT DETECTION
-15
85
85
TEMPERATURE (°C)
10
SENSE
9.98
9.96
9.94
9.92
9.90
9.88
9.86
9.84
9.82
9.80
9.78
190
188
186
184
182
180
35
= 0.5Ω, all registers = default setting,
32
32
60
37
37
SENSE TRIP VOLTAGE
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
GATE OVERDRIVE
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
42
42
85
47
47
52
52
57
57
62
62
7