MAX5940CESA+ Maxim Integrated Products, MAX5940CESA+ Datasheet - Page 13

• 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

If the wall adapter supply comes up first, it provides
power to the load and pollute the discovery and classi-
Figure 7. Adding Wall Adapter Input Supply (the One with Higher Voltage Provides Power to the Load)
-48V
GND
ADAPTER
SUPPLY
WALL
60V
25.5kΩ
R
68nF
DISC
______________________________________________________________________________________
D1
R
IEEE 802.3af PD Interface Controller
CL
Application Circuit 4
1
2
3
4
GATE
RCLASS
UVLO
V
EE
MAX5940D
MAX5940B
PGOOD
PGOOD
Typical Application Circuits (continued)
GND
OUT
For Power-Over-Ethernet
8
7
6
5
fication signatures. If the power-over-ethernet comes
up first, it powers the load until taken over by a wall
adapter with higher output voltage.
C
GATE
C
OUT
DC-DC CONVERTER
GND
V+
MAX5014
SS_SHDN
VREG
LOAD
13