MAX5952AEAX+ Maxim Integrated Products, MAX5952AEAX+ Datasheet - Page 40

• 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

The IVEE bits enable the current-limit scaling (Table
32). This feature is used to reduce the current limit for
systems running at higher voltage to maintain the
The three ICUT_ bits (Tables 34a and 34b) allow pro-
gramming of the current-limit and overcurrent thresholds
in excess of the IEEE 802.3af standard limit. The
MAX5952 can automatically set the ICUT register or can
be manually written to by the software (see Table 3).
High-Power, Quad, PSE Controller
for Power-Over-Ethernet
Table 32. Miscellaneous Configurations 2
Table 34a. ICUT Registers 1 and 2
Table 34b. ICUT Registers 3 and 4
40
Reserved
IVEE
Reserved
ICUT4
Reserved
ICUT3
Reserved
ICUT2
Reserved
ICUT1
SYMBOL
SYMBOL
SYMBOL
______________________________________________________________________________________
ADDRESS = 29h
ADDRESS = 2Bh
ADDRESS = 2Ah
BIT
7
6
5
4
3
2
1
0
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
R/W
R/W
R/W
—
—
—
—
—
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
—
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IVEE[1]
IVEE[0]
Reserved
ICUT4[2]
ICUT4[1]
ICUT4[0]
Reserved
ICUT3[2]
ICUT3[1]
ICUT3[0]
Reserved
ICUT2[2]
ICUT2[1]
ICUT2[0]
Reserved
ICUT1[2]
ICUT1[1]
ICUT1[0]
DESCRIPTION
desired output power. Table 33 sets the current-limit
scaling register. A reset or power-up sets R29h = 00h.
Class 1 and 2 limits can also be programmed by soft-
ware independently from the classification status. See
Table 3. A reset or power-up sets R2Ah = R2Bh = 00h.
Table 33. Current-Limit Scaling Register
(ADDRESS = 29h)
DESCRIPTION
DESCRIPTION
IVEE[1:0]
00
01
10
11
CURRENT LIMIT
Default
(%)
-10
-15
-5