max5945caxt Maxim Integrated Products, Inc., max5945caxt Datasheet - Page 43

• Manufacturer Part Number: max5945caxt
• Description: Max5945 Quad Network Power Controller For Power-over-lan
• Manufacturer: Maxim Integrated Products, Inc.

Typical Operating Circuit 2 (with AC Load Removal Detection)
V
VCCRTN
CC
SDA
SCL
(3.3V)
NOTE: ALL SIGNAL PINS ARE REFERENCED TO DGND.
OPTIONAL BUFFER
OPTIONAL BUFFER
______________________________________________________________________________________
DGND MUST BE CONNECTED DIRECTLY TO AGND
FOR AC DISCONNECT DETECTION CIRCUIT TO OPERATE.
180Ω
180Ω
3kΩ
ISOLATION
OPTIONAL BUFFER
HPCL063L
180Ω
(REF TO DGND)
1.8V TO 3.7V,
Quad Network Power Controller
HPCL063L
HPCL063L
3kΩ
3kΩ
-48V
3kΩ
-48VRTN
V
SDAOUT
SDAIN
SCL
DGND
DD
Typical Operating Circuits (continued)
0.5Ω
1%
MAX5945
1 OF 4 CHANNELS
100V, 120mΩ
for Power-Over-LAN
FDT3612
SOT-223
1kΩ
MIDSPAN
1N4002
OSC_IN
RESET
SHD_
AUTO
1N4448
INT
CAN BE UP TO 100kΩ
-48V RTN
OUTPUT TO PORT
50kΩ PULLUP
INTERNAL
1kΩ
INTERNAL PULLDOWN
(MANUAL MODE)
INTERNAL PULLDOWN
(SIGNAL MODE)
OFF
1kΩ
SINE WAVE
100Hz ±10%
PEAK AMPLITUDE 2.2V ±0.1V
VALLEY AMPLITUDE 0.2V ±0.1V
0.47µF
100V
V
DD
4.7kΩ
ON
OUTPUT TO
PORT
-48V
43