MAX5952 MAXIM [Maxim Integrated Products], MAX5952 Datasheet - Page 9

• Manufacturer Part Number: MAX5952
• Description: High-Power, Quad, PSE Controller for Power-Over-Ethernet
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
T
A
EE
= +25°C, all registers = default setting, unless otherwise noted.)
300
250
200
150
100
= -48V, V
50
0
0
THRESHOLD vs. OUTPUT VOLTAGE
V
0V
0A
EE
FOLDBACK CURRENT-LIMIT
DD
10
SHORT-CIRCUIT RESPONSE TIME
= +3.3V, AUTO = AGND = DGND = 0V, RESET = SHD_ = unconnected, R
OVERCURRENT TIMEOUT
V
(R
20
_______________________________________________________________________________________
OUT
LOAD
- V
EE
= 240Ω TO 57Ω)
30
(V)
20ms/div
20ms/div
40
High-Power, Quad, PSE Controller
50
MAX5952 toc12
MAX5952 toc14
Typical Operating Characteristics (continued)
V
10V/div
V
(AGND - V
20V/div
0V
I
200mA/div
V
10V/div
(AGND - V
50V/div
0V
I
200mA/div
0A
INT
5V/div
OUT
OUT
350
300
250
200
150
100
GATE_
EE
GATE_
50
0
0
THRESHOLD vs. OUTPUT VOLTAGE
OUT
OUT
)
)
FOLDBACK CURRENT-LIMIT
10
V
for Power-Over-Ethernet
20
OUT
- V
EE
30
(V)
V
0A
0V
EE
(MAX5952AUAX) (R
OVERCURRENT RESPONSE WAVEFORM
40
SHORT-CIRCUIT RESPONSE TIME
50
SENSE
400μs/div
4μs/div
LOAD
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
= 240Ω TO 57Ω)
= 0.5Ω, IVEE = 00, ICUT = 000,
DC LOAD DISCONNECT THRESHOLD
-15
MAX5952 toc13
MAX5952 toc15
vs. TEMPERATURE
TEMPERATURE (°C)
10
I
200mA/div
(AGND - V
50V/div
GATE
10V/div
INT
2V/div
(AGND - V
20V/div
0V
I
10A/div
130mA
V
10V/div
V
0V
OUT
OUT
GATE_
EE
35
OUT
OUT
)
)
60
85
9