MAX5940CESA+ Maxim Integrated Products, MAX5940CESA+ Datasheet - Page 12

• Manufacturer Part Number: MAX5940CESA+
• Description: IC IEEE 802.3AF PD INTFC 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX5940CESA+

• Controller Type: Powered Device Interface Controller (PD)
• Interface: IEEE 802.3af
• Voltage - Supply: 48V
• Current - Supply: 1mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IEEE 802.3af PD Interface Controller
For Power-Over-Ethernet
D2 prevents the wall adapter power from polluting the
discovery and classification signatures. The optional
Figure 6. Adding Wall Adapter Input Supply (Wall Adapter Supply And Power-Over-Ethernet Co-Exist, the One with Higher Voltage
Provides Power To The Load)
12
-48V
GND
______________________________________________________________________________________
ADAPTER
SUPPLY
WALL
60V
25.5kΩ
R
68nF
DISC
R
D1
CL
Application Circuit 3
1
2
3
4
GATE
RCLASS
UVLO
V
EE
MAX5940B
MAX5940D
PGOOD
PGOOD
Typical Application Circuits (continued)
GND
OUT
8
7
6
5
R4 provides the 10mA minimum power maintenance
signature to keep the power-over-ethernet from discon-
necting.
C
GATE
R4
4kΩ
2W
D2
C
OUT
DC-DC CONVERTER
GND
V+
MAX5014
SS_SHDN
VREG
LOAD