MAX5952AEAX+ Maxim Integrated Products, MAX5952AEAX+ Datasheet - Page 35

• Manufacturer Part Number: MAX5952AEAX+
• Description: IC PSE CNTRLR FOR POE 36-SSOP
• Manufacturer: Maxim Integrated Products
• Type: Power Over Ethernet Controller (PoE)r

Specifications of MAX5952AEAX+

• Applications: Remote Peripherals (Industrial Controls, Cameras, Data Access)
• Internal Switch(s): No
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-BSOP (0.300", 7.5mm Width)
• Product: Controllers & Switches
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.71 V
• Power Dissipation: 941 mW
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Supply Current: 4.8 mA
• Input Voltage: 60V
• Digital Ic Case Style: SSOP
• No. Of Pins: 36
• Uvlo: 28.5V
• Frequency: 400kHz
• Interface: I2C
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Controller Type: Power Over Ethernet PD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Setting CL_DISC to 1 (Table 21) enables port over
class current protection, where MAX5952 scales down
the overcurrent limit (V
classification status. This feature provides protection to
the system against PDs that violate their maximum
class current allowance.
The higher current setting is enabled only after a suc-
cessful startup so that the PD powers up as a normal
15W device.
Power-enable pushbutton for semi and manual modes
is found in Table 22. Setting PWR_ON_ to 1 turns on
power to the corresponding port. Setting PWR_OFF_ to
1 turns off power to the port. PWR_ON_ is ignored
when the port is already powered and during shut-
down. PWR_OFF_ is ignored when the port is already
Table 21. Miscellaneous Configurations 1
Table 22. Power-Enable Pushbuttons
INT_EN
RSTR_EN
Reserved
Reserved
POFF_CL
CL_DISC
OUT_ISO
PWR_OFF4
PWR_OFF3
PWR_OFF2
PWR_OFF1
PWR_ON4
PWR_ON3
PWR_ON2
PWR_ON1
SYMBOL
SYMBOL
ADDRESS = 17h
ADDRESS = 19h
______________________________________________________________________________________
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
FLT_LIM
R/W
R/W
R/W
R/W
R/W
W
W
W
W
W
W
W
W
R
R
R
R
) according to the port
High-Power, Quad, PSE Controller
A logic-high enables INT functionality
A logic-high enables the autorestart protection time off (as set by the RSTR[1:0] bits)
Reserved
Reserved
A logic-high prevents power-up after a classification failure (I > 50mA, valid only in AUTO
mode)
A logic-high enables reduced current-limit voltage threshold (V
Forces DET_ to high impedance. Does not interfere with other circuit operation.
A logic-high powers off port 4
A logic-high powers off port 3
A logic-high powers off port 2
A logic-high powers off port 1
A logic-high powers on port 4
A logic-high powers on port 3
A logic-high powers on port 2
A logic-high powers on port 1
for Power-Over-Ethernet
CL_DISC, together with EN_HP_CL_ (R15h[6:4]),
EN_HP_ALL (R15h[7]), and ENx_CL6 (R1Ch[7:4]) are
used to program the high-power mode. See Table 3 for
details.
Setting OUT_ISO high (Table 21), forces DET_ to a
high-impedance state.
A reset sets R17h = 0xC0.
off and during shutdown. After execution, the bits reset
to 0. During detection or classification, if PWR_ON_
goes high, the MAX5952 gracefully terminates the cur-
rent operation and turns on power to the port. The
MAX5952 ignores the PWR_ON_ in auto mode. A reset
sets R19h = 00h.
DESCRIPTION
DESCRIPTION
FLT_LIM
) according to port
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